Convert Windows XP Service Pack 2 into Service Pack 3

A service pack (SP) is a Windows update, often combining previously released updates, that helps make Windows more reliable. Service packs, which are provided free of charge on Microsoft website , can include security and performance improvements and support for new types of hardware. Make sure you install the latest service pack to help keep Windows up to date. Service packs take about 30 minutes to install, and you'll need to restart your computer about halfway through the installation.

You can check your service pack version using these steps:

1.  Open My Computer
2.  You'll find ' Help' button on the toolbar , click this
3.   Select "About Windows" and check your sp version  
 

OR

1.   Right click on my computer and select properties
2.  Check your SP version

BUT ....... what if you don't want to upgrade your service pack version ??? 

Well I'v installed service pack 3 upgrade on my windows xp pro ( SP2 ) 3 times and it made my PC freakingly slow . I can't even run 2 tasks simultaneously , windows just keep freezing . So the final conclusion is - DO NOT INSTALL SERVICE PACK 3  .

But what about update , many programs works only with Service Pack 3 update like antiviruses . so what to do . .............................................................
well there's a solution for this problem - a very simple solution . I'll show you how to convert your Windows XP Service Pack into Service Pack 3 without downloading and installing a 300mb update file .


Follow these simple steps :

1.  Click on 'Start Menu' then click 'Run' and type 'regedit' then click ok. ( it will open the registry file )
2.  In registry go to : HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Windows
3.  Right-click on CSDVersion and click modify
4.  change the value from 200 to 300
5.   Restart computer . 

Now check your  sp version , it'll show : Service Pack 3