CleanTemp

CleanTemp 1.5 looks after your TEMP folder - that's the folder windows
and other programs use to store temporary files. Unfortunately, these
temp files are not always deleted. They can build up and consume your
disk space.
CleanTemp can automatically delete these files for you. CleanTemp only
runs when windows starts, so it does not use up any of your memory or
processing power.
http://www.html2exe.com/mnu/dl/dl.shtml#free