you can also move this folder somewhere else if you want to.
I do on all my user desktops as we have roaming profiles and the default location will fill up a users profile and cause problems when they try to logoff or logn to the network.
Go under internet options then on the first tab select "Settings" under the temporary internet files section.
You can move the folder to where ever you choose but rememebr that where you move it, it will always make the folder "Temporary Internet FIles".
I usually move it to c:\temp