The easiest way is to play with our online-version over a server.
yes, exactly. You could also setup a kaillera server up yourself, on one of the 2 computers, and connect to it both of you. It doesnt take that much time. Usually works good on lan. Tested it with friends several times with great success. hf
http://kaillera.com/files/kaillerasrv-0.86-win32.zip (windows)
if other system take a look on
www.kaillera.com