The real folder can be located in WinXP by;
right-click on 'my computer' and click properties. If you don't have that icon on desktop, go into control panel and use 'system'.
Once there, click on 'Advanced' tab and then click 'Environment variables'. It will show you locations to TEMP folder for user and for the system.
I myself, always change these to a temp folder on my D drive so I don't fill up my C drive.
It is more than likely TEMP is the proper one. TMP you will probably find is just a rogue program that decided it wanted it's own folder and to disregard proper one.
Boo!