Attached Link: http://www.sysinternals.com/

PRCView is a great little program but, somewhat ironically, "closes" to the system tray and remains resident in memory.

My favourite process viewer is one of SysInternal's excellent freebies: Process Explorer. Go to the URL above and, on the left hand side of the screen, select 'utilities' from the section relevant to your operating system. Scroll down until and find Process Viewer.

It's a little more complex than most process viewers but has some very neat tricks. For instance, drag a target from the software over a window and the relevant process is highlighted in Process Viewer. Also right click on a process, select Google and your browser displays pages relating to that process. A great aid for quickly deciding which processes to kill when freeing up resources.

Check out SysInternals' other apps. They're all free too. 'Bless 'em.

Cheers,
Mark