Viewing Workstation in Workgroup

We currently have 12 Win98 workstations setup on a peer to peer workgroup. The problem I am having is that two of the machines on the network cannot see each other but can see all the other machines. I have no problem with the other 10 workstations seeing every other machine in the workgroup. Does anyone have any suggestions for solving the problem.

One other thing the machine we are trying to connect with is also our internet connection while the others are clients using the internet conection sharing provided with Win98. I haven’t installed the client software the other machine involved but figured that should have no bearing on finding each other in network neighborhood.