A rootshell for nt/2k/xp. Well, actually a shell that runs in the security context of the NT SYSTEM/AUTHORITY, which means the user has ie. the right to use task manager to kill running services. Yipee! Idea originally from some MS sample sourcecode from the MSDN, NT only, adapted to work on both 2000 and XP. Whole lotta fun!
Note: You already need administrative (ie. debug) privileges to run it. The whole point is that you run a shell in the security context of the NT SYSTEM/AUTHORITY (the context a System service sees) not the context of an Administrator with GUI login. If that doesn't make sense to you, don't use grootshell.