Vista System Restore:


START

RT CLICK    COMPUTER    PROPERTIES

SYSTEM PROTECTION TAB

SYSTEM RESTORE BUTTON

NEXT

CHOSE A DIFFERENT RESTORE POINT, NEXT

chose one, next, next





XP System restore:


START

HELP AND SUPPORT

on the right will be "Undo changes to your computer with System Restore"

"Restore my computer..."   next

CHOSE A DIFFERENT RESTORE POINT with calender on left, and select it on right in the list

next, next

if it does not work, only a technician like me can get it done for you manually.