Windows Sysinternals
Sysinternals is now available on TechNet. Unfortunately it looks like the Process Explorer hasn’t been Vista enabled; check “Replace Task Manager”, close Process Explorer and Task Manager, and then bring up Task manager. If I do this on Vista RTM, I see “c:\windows\system32\taskmgr.exe The requested operation requires elevation.”

Yeah I get the same thing.. pretty annoying..
Same same here. Tried the different compatibility modes, running as admin… nothing helps.