Temp files for all XP users?

When I try to clean out my hard drive using the Disk Cleanup tool in Windows XP it only seems to clean out the temp files for the ID I'm currently logged in under. My computer has an ID for my wife and both my sons. Will CCleaner clear all of their temp files as well when I run it under my ID, or do I have to log on and run it under each of their ID's?

You have to log onto each user account.

RESOLVED

OK, Thanks.