Multi-Box is also in pre-compiled form, just unzip it to each computer and run the server + client on one and then just the client on the others. However, I will admit that I don't really maintain MutliBox much anymore. One day I hope to get back to it and offer better support but at the moment I just don't have the drive. :/ None the less, the current version works in 95% of cases and it offers keyboard broadcasting (and mouse broadcasting should you want it).