Make ur XP SP2 to SP3... usefull to games and software installtion

You can change your Service Pack 2 to display 3, or vice-versa.

Step 1: Open "run" option from the start menu and type in 'regedit' and press enter
Step 2: Make a backup of your registry (just in case)
Step 3: Browse to "HKEY_LOCAL_MACHINESYSTEM CurrentControlSet Control Windows"
Step 4: Modify the value of "CSDVersion" from "0x00000200" (SP2) to the Windows XP SP3 value of "0x00000300"
Step 5: Close registry editor
Step 6: Reboot your computer

Enjoy the SP3....