NT Workstation Peer-To-Peer Network

I have just set up a peer to peer network with 4 pcs running NT workstation, and I can’t get it to work. I have installed TCP/IP and I have removed Server Services and disabled NetLogon, and Computer Browser, and yet I still have no look, is there anything special I need to installed. I am using NT 4.0 with SP 6, should I install Option Pack? can some one help.
Also I have a 3Com OfficeConnect LanModem on the network, could this be a problem?