Our 32" Sony Bravia LCD TV wasn't really old but felt a bit obsolete. There were no USB ports, the TV wasn't network-capable meaning it cannot connect to the Internet or the home network, the 32" screen looked rather small in the living room and, most important, the TV didn't support full HD.
It was therefore time to upgrade to something bigger and more advanced.
I am no expert to offer you any advice on buying TVs but I’ll still try to summarize the key things I learned from the various websites and my Twitter friends while researching for my own purchase.

A Buying Guide for TV

There are several points to consider before buying a TV. What screen size should you choose? Is LED better than LCD or Plasma TVs? Which ports should you look for in a TV? Is it worth paying extra for networking related features? HD (720p) or Full-HD (1080p)? Which TV brand should you go for? And finally, is 3D necessary?

LCD, Plasma or LED?

There are basically two types of TVs - LCD and Plasma. The other category, LED, is actually a type of LCD but one that is slimmer (looks matters) and consumes less electricity than regular LCDs. I haven't had a chance to compare the picture quality of equivalent LED, LCD and Plasma HDTVs side-by-side but most online material seem to suggest that Plasmas offer the best picture quality.
The other point in favor of Plasma HDTVs is the viewing angle. LCDs and LEDs are best viewed from the front but if your room’s seating arrangement is such that people may have to watch TV while sitting at either sides, Plasmas may be a better option as the have a wider viewing angle. That said, if your TV room is brightly-lit or has too many windows, the Plasma screen may carry glare or reflection. LCDs have a matte screen and thus don't have the reflection problem.

Size of the TV Screen

HDTVs are available in various sizes and the one you should choose depends on two factors - the length of your room and obviously your budget.
As a rule of thumb, the ideal size of the TV screen should be anywhere between .3x and .6x where x is the distance between your sofa and the TV. For example, if the viewing distance is 6 feet (or 72 inches), you can go for a 24" - 48" screen.

TV Input Ports

Most newer TVs have HDMI and USB ports but what's also important is the location of these ports. If you are planning to wall-mount the TV, make sure that there are enough free ports at the sides of the unit because, once you mount the TV, it will be inconvenient, or rather impossible, to use the back ports for connecting your gadgets to the TV.

Screen Resolution – 720p, 1080i or 1080p

The next factor is the screen resolution where your choices are 720p, 1080i and 1080p - also known as full HD. Unless you are getting a small screen TV - like 32" - go for 1080p resolution and here’s why. More and more TV channels are becoming available in high-definition, the HD picture quality is vastly superior but you need a 1080p TV to experience the difference.
Jason Bonney adds – “Although I see no reason NOT to get a TV supporting 1080p, it's currently only really needed for Blu-ray. Broadcast HD TV is only 1080i and most video games (XBox 360/PS3) are native 720p being upscaled to 1080. So you can get by with 1080i if need be. I had an HD DLP 1080i for years before upgrading recently, and for HDTV and my 360 games it was still great.”

3D or 2D?

All brands are working hard to sell you 3D-capable TV sets but is 3D worth the extra cost or should you just settle for the good-old 2D? It depends.
We have a joint family and the TV is placed in a common room so we mostly watch it together. In order to enjoy 3D content, one needs to wear 3D glasses. If there are four other people in the room, they also need to wear compatible 3D glasses. The glasses are expensive but cost aside, I highly doubt if folks at home would be willing to wear a pair of glasses for watching a movie or a TV program. Also, there's isn’t enough 3D content available anyway – especially in regional languages - so we decided to go with 2D.

Network Connectivity

The other important feature to consider while deciding a TV is network connectivity. The expensive TV models often have built-in WiFi (or Wireless LAN) while others are WiFi-capable meaning you can attach an extra dongle, always old separately, to connect the TV to the home network or for watching web videos - like YouTube - on your TV wirelessly.
All Internet-ready TVs have an Ethernet port so if you can stretch the LAN cable from the router to the TV, you can go for the WiFi-capable model but without spending on the USB wireless adapter. Also look for DLNA support as it will become easy for you to stream photos, music and videos from your computer and mobile phone to the TV screen.
One more thing. TV vendors like Sony, Panasonic, Samsung and LG bundle various 'apps' to help you watch YouTube videos, Flickr photos and other web content on the HDTV. However, the number of apps offered by these vendors is still small, they have no built-in browsers, no web search and you are thus limited to a very tiny portion of the web.
So what we finally picked is a 50" Panasonic Viera Plasma TV, full HD, lacks 3D, Internet-ready but without built-in Wi-Fi. It is definitely not “razor-thin” but since the unit is mounted on a wall, you rarely notice the thickness. Also, Panasonic offers limited Internet apps but not that we have connected it to Logitech Revue (read review of Google TV), family members can access almost the entire web in the living room.
While everyone has different requirements or “wants” and there’s no such thing as ‘perfect’ when it comes it to buying electronics, the above points may help you make a slightly more informed decision and get more value for your money.

Would you like to download the entire Wikipedia on your computer or mobile phone for offline reading? Well, here are some good options to consider.

Download Wikipedia Articles for Offline Reading

Wikipedia, the world’s largest encyclopedia, offers downloadable copies (or database dumps) of all its wikis that one can download and thus access the entire Wikipedia content on computers that are not connected to the Internet.

The database dumps are frequently updated and include every single article that’s available on the main Wikipedia website. The dumps are available as .xml.bz2 files that you can easily open on your computer using the free and portable WikiTaxi software.

WikiTaxi ships with an importer that will first uncompress the Wikipedia database files (.bz2) and then converts them into a .taxi file format. Now you open these .taxi files inside WikiTaxi just like the way you open .doc files inside Microsoft Word and, if you are running low on space, the original Wikipedia dumps may be safely discarded.

A good alternative to WikiTaxi is Kiwix – this is also free software and available for Mac, Windows and Linux systems. You first install the Kiwix software on your computer and then download one of the Wikipedia editions – the articles are packaged as .zim files that’ll open directly inside Kiwix without requiring any conversion.

Kiwix is definitely easier to use than WikiTaxi and that packaged .zim files can read across all popular platforms but the downside is that, unlike the database dumps used by WikiTaxi, the .zim files aren’t very frequently updated. Also, the zim package for English Wikipedia doesn’t include every article though the packages for other languages are complete.

If you have an iOS device – like the iPhone, iPad or iPad Touch – you may grab the excellent Wiki Offline app and carry all the Wikipedia articles in your pocket. The app renders Wikipedia articles in a beautiful interface and supports tabbed browsing so you can open multiple articles side by side. Wiki Offline is also available in the Mac App Store for your Mac OS X.

The other option for using Wikipedia offline is WikiReader – this is a 3.5” monochrome device with a capacitive touch screen and contains over 3 million Wikipedia articles. The  updates to Wikipedia articles are released every quarter – you can update the device by connecting it to your computer – or you opt to receive updates on SD cards.

The WikiReader device costs  $99 and though I haven’t tried it myself, it did get a huge thumbs-up from Ars Technica. You definitely don’t need this if you carry a smart phone that is always connected to the Internet but could be a good reference tool for the rest of us with an impressive battery life – much like the Kindle.

There’s a free Windows utility called BeCyPDFMetaEdit that can help you remove passwords from PDF files* but without make any other change to the document. (I am not sure why the developers picked such a complex name for this useful utility).
Here’s what you need to do:

1. Launch the program and it will ask your for the location of the PDF file.

2. Before you select and open the PDF, change the mode to “Complete Rewrite.”

3. Switch to the Security tab and set the “Security System” to “No encryption.” Click the Save button and your PDF will no longer require a password to open.

How to create a bootable Windows XP SP3 CD/DVD (Nero)

 Step 1

• Create 3 folders - ex.
  C:\WINXPSP3
  C:\SP3
  C:\XPBOOT 

Step 2

• Copy the entire Windows XP CD into folder WINXPSP3 

Step 3 

You will have to download the SP3 Update.

• Rename the Service Pack file to XP-SP3.EXE
• Extract the Service Pack to SP3 from the Run Dialog using the command: ex.
• C:\XP-SP1.EXE -U -X:C:\SP3 

Step 4 
Open Start/Run... and type the command:

• update.exe -s:WINXPSP3 ex.
• C:\SP3\update\update.exe -s:C:\WINXPSP3
• Click OK
• Folder WINXPSP3 contains: Windows XP SP3
• In the same way you can add hotfixes and updates to your XP SP3 ex.
• H:\WindowsXP-KB942288-v3-x86 -s:H:\XP 

============================== ===============
How to Create a Windows XP SP3 CD Bootable
============================== ===============
Step 1 
Download xpboot.zip

• Code:
• Code:
• http://thro.port5.com/xpboot.zip   ( no download manager !! )
• Extract xpboot.zip file(xpboot.bin)in to the folder XPBOOT or Create an iso of bootable WinXP
• Open it using 7Zip.
• Look in [BOOT] file to Bootable_NoEmulation.img file
• Copy it to XPBOOT 

Step 2 

•           Start Nero - Burning Rom.
• Select File > New... from the menu.

1.) Select CD-ROM (Boot)
2.) Select Image file from Source of boot image data
3.) Set Kind of emulation: to No Emulation
4.) Set Load segment of sectors (hex!): to 07C0
5.) Set Number of loaded sectors: to 4
6.) Press the Browse... button 

Step 3 
           Select All Files (*.*) from File of type:

• Locate boot.bin or Bootable_NoEmulation.img in the folder XPBOOT

Step 4 

•           Click ISO tab 
•           Set File-/Directory length to ISO Level 1 (Max. of 11 = 8 + 3 chars)

• Set Format to Mode 1
• Set Character Set to ISO 9660
• Check all Relax ISO Restrictions

 
Step 5

• Click Label Tab
• Select ISO9660 from the drop down box.
• Enter the Volume Label as WB2PFRE_EN
• Enter the System Identifier as WB2PFRE_EN
• Enter the Volume Set as WB2PFRE_EN
• Enter the Publisher as MICROSOFT CORPORATION
• Enter the Data Preparer as MICROSOFT CORPORATION
• Enter the Application as WB2PFRE_EN

* For Windows XP Professional OEM substitute WB2PFRE_EN with WXPOEM_EN
* For Windows XP Home OEM substitute WB2PFRE_EN with WXHOEM_EN 

Step 6 

• Click Burn tab
• Check Write
• Check Finalize CD (No further writing possible!)
• Set Write Method to Disk-At-Once
• Press New button 

Step 7 

• Locate the folder WINXPSP3
• Select everything in the folder and drag it to the ISO compilation panel.
• Click the Write CD Dialog button.
• Set Burn speed to 16x
• Press Write
• You're done.
• Have any problems???
• Dont wait to ask....

Sri Lanka, officially the Democratic Socialist Republic of Sri Lanka. known as Ceylon before 1972 is an island nation in South Asia, located about 31 kilometers (18½ mi) off the southern coast of India. Originally known as Heladiva, it is home to around twenty million people.
Sri Lanka is a strategic naval link between West Asia and South East Asia and has been a centre of Buddhist religion and culture from ancient times. Today, Sri Lanka is a multi-religious and multi-ethnic nation, with a fifth of the population following faiths other than Buddhism – notably Hinduism, Christianity and Islam. The Sinhalese community forms the majority of the population (around 78%), with Tamils, who are mostly concentrated in the north and east of the island, forming the largest ethnic minority. Other communities include the Muslim Moors and Malays as well as Burghers. English is widely spoken and is studied as a compulsory secondary language in school.
Island has a pleasant tropical climate and average temperature of the low lands ranges between 25-30 degrees Celsius. Famous for the production and export of tea, coffee, rubber and coconuts, Sri Lanka boasts a progressive and modern industrial economy. The natural beauty of Sri Lanka’s tropical forests, beaches and landscape, as well as its rich cultural heritage make it a world famous tourist destination.
Sri Lanka’s Per Capita GDP is presently US$ 900 – the highest in South Asia and the Literacy rate is 92% – the highest in South Asia and second highest in Asia. According to the Economic Intelligence Unit (EIU) Forecast 1998, Sri Lanka’s Business Environment ranks 11th in the region, and 42nd in the world, ahead of India, China, Indonesia, Vietnam and Pakistan.