Turn Off System Restore to Save Space

By default, Windows XP keeps a backup of system files in the
System Volume Information folder. This can eat up valuable space
on your hard drive. If you don't want Windows to back up your
system files:
Open the Control Panel.
Double-click on System.
Click the System Restore tab.
Check "Turn off System Restore on all drives".
Hit Apply.
You may now delete the System Volume Information folder.