|You do not want to give them the same IP address, this will give you some pretty major issues.|
You need to go into the DHCP settings of your router and assign each printers MAC address an IP address in the same subnet as your computers (most home routers run on the 192.168.1.0 network, You could say configure DHCP to assign those MAC addresses to 192.168.1.200 and 192.168.1.201
Then on each computer configure the printers addresses in its properties and ports tab. (note: you may have to create a port to print to that IP address). I did a search for TCP/IP printing on google and found this site, it should help with setting up the printers on your computers.