Attached Link: CCleaner

You can also use CCleaner, which in addition to clearing out the temp folder cleans a host of  other detritus including (at your option) log files, chkdsk fragments, browser caches, and application specific temporary files like Photoshop, Flash, media players etc. You can also set it to run at startup and optionally  do a secure wipe of deleted files. Highly recommended.

N.B. A number of security folks recommend disabling the association for .vbs files to prevent malicious scripts from running. Your AV or other security software may  block execution of .vbs files also. If your system is set up to 'hide file extensions for known file types' (I think the default through XP at least), files like the infamous AnnaKournikova.jpg.vbs can appear to be innocent images or text files but in reality be malicious script code. 

If you don't write or run script files often, it's not a bad idea to change the association so that .vbs files open in Notepad. You can still run them from a command line ex:

Wscript DeleteTempFiles.vbs

e.g  Wscript "C:MyApps DeleteTempFiles.vbs"

Put that command in a text file on your desktop and rename it to DeleteTempFiles.bat and you're still set with a convenient way to run it - or put the .bat file in your startup folder. I'm not sure if Vista/Win7 place any new restrictions on this stuff, as I too still run XP.

Just to clarify, the file Robyn posted is safe since she checked the code. Actually, safer than the stuff I write but I have only my own computer to destroy :-)

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken