Networking W2K Systems

I am attempting to set up a network with two machines running W2K and one running W98SE. They are setup in a workgroup through a D-Link router. The router is acting as the DHCP. The router can see all of the systems but I can’t get the computers to see each other. I’ve checked all the IP settings and they are all correct on each machine. They do not see themselves when I pull up the network places either. So I am guessing that something is enabled in W2K that is preventing them from seeing each other. Only I’m not familiar enough with W2k to know what it is.

Thanks.