All stuff that you know, but all handy.
Shutting down a server or pc from another pc;
Use Computer management, either your own machines 'manage' or a mmc and computer management, choosing a remote server or pc.
Right click on the computer, advanced, startup and recovery, shutdown and REMEMBER to use restart, especially if your remote.
Sometimes, a server is locked, or otherwise madly locked up, and the above option won't work try the following;
open a command line, and type the following
shutdown /f /m \\swing (your server or pc name) /r
/m this is a remote machine, followed by \\ and then the machine name
/r shutdown and re-start.