501 PIX default configuration and browsing (or lack thereof)?

I am getting a "The list of servers for this workgroup is not currently available" message.

Is there anything in the default configuration that would prevent NETWORK PLACES from displaying a list of workgroup computers by their machine name or anything that I need to do to enable such? Any mismatch in settings that I might have made between the computers and the 501?

My SOHO network does not have a DNS or a WINS server if that makes any difference - I am using the 501 to assign DHCP addresses to the workgroup computers.

NETWORK PLACES properly displayed the workgroup computers by their machine name with the WinGate system I was using prior to switch to the

Any help would be most appreciated but please keep in mind you are talking to someone who is essentially network illiterate at this point.