I have made a simple port of Multi-Box to C#, which supports Keyboard/Mouse sharing between multiple computers. I currently have no documentation available, however the source code is included (in case you don't feel like using Reflector. If you make modifications to this code, please send them to tphire at live.com, as I would love to see what you've added :)
Download the Source (build it yourself if you don't trust my executable) and Executable from:
Enjoy.
