You don't DHCP those. Your LAN is likely the common 192.168.1.x one so set the printer at an easy to remember 192.168.1.100 address and tell your machines where it is.
I am networking two WinXP PC's via a DSL router that provides dynamic IP addresses. Also, I have a Windows workgroup enabled. I recently added a laswer printer with a NIC and connected it directly to the router. For a few days after installing the Lexmark software that supports dynamic IP addresses, everything works fine. But eventually the DHCP server in the router drops the printer as a listed client--and of course I can't print.
Where do I start looking to find a way to get a stable connection for the printer? I was hoping to avoid the cost and physical space of getting a dedicated print server.
BTW, the printer is a Lexmark 734n and the router is a Linksys 4-port