PS Tools
http://www.sysinternals.com/Utilities/PsTools.html
Ps Tools, by sysinternals is a collection of free command line tools for windows that do such things as remotely run programs, show/kill processes, and start services. They come in very handy for remote administration/help desk.
All of them will run just fine from a CD, and by creating a gui with autohotkey, or a script with cygwin unix utilities, or a batch file, you can use them without having to remember the syntax for the commands.
Ps tools come in very handy for what I do. If you work with remote systems, you should definitely check them out.