File Sharing in 10.1


well, am i just being completely dumb, but for some reason, with file sharing turned on on both Macs on my LAN, when i connect to server nothing shows up, not even my mac, whats up with that?
i thought 10.1 was supposed to have sorted out the filesharing problems of 10.x, now the other computer doesn't even show up.
both macs are G4's with guest accounts available and static ip's, i've tried accessing the other ips directly but it just timesout.
any ideas guy's?