>(there is no 'server' per se, so I'm guessing that the DHCP is being provided by the switch)
Switches normally do not have a DHCP server. Broadband outers normally do (http://duxcw.com/faq/ics/diffrout.htm). Windows 2000 Pro running Internet Connection Sharing (ICS) has a DHCP server.
Go to Start, Settings, Control Panel, Network, and right-click the instance of TCP/IP bound to the network adapter going to the local network, Properties, IP Address and set it to obtain the IP automatically. Disable DNS. Then Start, run, enter winipcfg, select the adapter, and Release and Renew the IP. You should see it change. Other things to check are at http://duxcw.com/faq/network/brreq.htm and http://duxcw.com/faq/network/names.htm. They may have to setup an account on for you the Windows 2000 Pro computer.
>Also, they have another Win 2000 Pro workgroup (with a different workgroup name) using DHCP, which does have a server (running Win 2000 Server) and uses a hub rather then the switch. How can I get these two workgroups to see each other??
You canít. http://duxcw.com/faq/network/netsel.htm might be helpful. It cn also be done with Profiles. Larry