Originally posted by scsa20 actully, it is C:\Documents and Settings\USERNAME\Recent, if you go to C:\Documents and Settings\USERNAME, look for an icon (it's going to be hidden) that says My Recent Documents
If you update XP via Windows Update and pull down the latest hotfixes, XP creates a backup of altered files,etc. in your C:\Windows folder, can't remember the folder name, but they should be at the top of the folder list.
As long as you're updates are working OK, it should be ok to delete the backup folders - to test, move the folders into another folder (i.e. c:\todelete) and restart your PC, if everything works out ok (and there should be no reason why it shouldn't) it's safe to delete the folders from the c:\todelete folder.
Obviously without the backup, you won't be able to uninstall that hotfix from the add/remove programs list.
I wouldn't recommend deleting anything from the windows folder
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