There is a site called http://www.sysinternals.com which started out with a lot of good free utils for M$ windows stuff. (PStools is what you are looking for here). However they seem to be branching out into Linux stuff now. You could run a script through WINE and remotely shutdown the windows boxes easily (i've done it to several workmates ;-). You could also run a script to remotely shutdown Linux boxes if you know the computer name and login/password. How many computers are you looking at? If not many then a script may be what you are looking for.
But this is all for boxes and running something you know, and know how to get onto. The only really low level stuff about shutdown/rebooting a box whatever it is, is to use a Kambrook timer. Don't laugh it works a treat! I had a print server I had to bounce often (don't ask why). I set up a timer and it would shut it down and restart it just when I wanted it to. I had an image of the box so I didn't care if it ever got corrupted - which it never did. I know it sounds crazy but perhaps a "pull the plug" solution might do what you want?
Ben
-- SLUG - Sydney Linux User's Group - http://slug.org.au/ More Info: http://lists.slug.org.au/listinfo/slug
