AUTO DELETE TEMPORARY FOLDER

First go into gpedit.msc

Next select ->
Computer Configuration/Administrative Templates/Windows Components/Terminal Services/Temporary Folder

Then right click "Do Not Delete Temp Folder Upon Exit"
Go to properties and hit disable.

Now next time Windows puts a temp file in that folder it will automatically delete it when its done! 

Note:
Remember, GPEDIT (Group Policy Editor) is only available in XP Pro.