Help with name of an windows xp file?

Question

what was the name of the utility in windows xp that let you back up your pc a few months?

Answer 1

Start > All Programs > Accessories > System Utilities > System Restore> Restore my system to an earlier time > select one of the darker (bold) dates from a month.  

Answer 2

If you want to bring your computer back to a previous date or set a restore date you would use system restore.  Usually your computer will automatically back up on certain days but that's what you would want to do.