Windows XP System Restore feature enable user to restore the computer to a earlier time. you have to create a restore point. By following the below steps you can stop this feature of windows xp temporarily

*Log into your computer with administrative privileges.

*Go to Start --> Run. The Run window will open.

*Type "cmd.exe" in the Run window. This will open a command prompt. *At the command prompt, type "net stop System Restore Services".

*You should see a message saying that the System Restore Services process has been stopped. For more information about system restore visit the link here.