Has anyone found a Google gadget for google desktop that shows top process usage.

or this one : Resource hog tracker is what you are looking for.

"I know that this is not for Google Desktop, but Windows Sidebar has a low memory usage CPU and RAM meter. Otherwise, use a small program, not a gadget, like Moo0 System Monitor.

Get Vista sidebar in XP (just some possibilities, they might or might not work):
http://vista-sidebar-xp.en.softonic.com/

http://www.downloadsquad.com/2008/11/17/get-the-vista-sidebar-in-xp/ - this ones looks pretty good

http://techblissonline.com/vista-sidebar-windows-xp/

Of course, should you not want to the vista sidebar (which is actually semi-cool)..."