Is there a question here?
Where do you want to to set the IP address?
If it is on a workstation of some sort,there setup a static route to the Router using the route add command, e.g. if you are on network 192.168.1.0 and want to route to machines on network 192.168.2.0 through a router with ip address 0f 192.168.1.254 then you can set up a static route on your workstations with the command like
route add net 192.168.2.0 192.168.1.254
Richard
richard@brecon.co.uk