PsKill

PsKill is a kill utility that not only does what the Resource Kit's version does, but can also kill processes on remote systems. You don't even have to install a client on the target computer to use PsKill to terminate a remote process. Running PsKill with a process ID directs it to kill the process of that ID on the local computer. If you specify a process name PsKill will kill all processes that have that name.

Usage: pskill [- ] [-t] [\computer [-u username] [-p password]]