Hmm yes can you explain what this is for?
A kvm will let you use more then one tower (computer) with only one keyboard, mouse, and monitor.
If you are looking to use 2 key, Vid, Mouse on one tower thats a bit tricky.
Remote desktop like VNC, or windows Remote desktop would be the best bet if you have 2 towers and want to look at eachother in other rooms. Altho with VNC i dont think it will stream moves well over it, if thats what you are trying to do.