Gladius

hi everyone, me and my mate want to play dune 2000 over lan, we have two computers linked using an ethernet crossover cable, both are xp home edition, i am using the disk in 1 computer and no disk in the other my problem is that go into multiplayer, i click the LAN button and everything comes up, but i cant see the other computer when it clicks the LAN button, i am using the Ipx protocal.