If you have W2K/XP then get PSEXEC from
http://www.systeminternals.com/ntw2k.../pstools.shtml (they have a lot of other great tools there too).
This may be what Vass was thinking of.
To use this you need appropriate rights on the remote computer.
Aother type of idea for W2K/XP is the AT.exe command. With AT.exe you can create a sceduled task on the remote PC. In particular, I use VB scipting and AT.exe to do scheduling on large groups of computers within a domain. At.exe is normally found in the %system%\system32 folder.
As for doing similar using other OSes like Win9x and NT40, I'm no longer fluent in those areas.