This router should more or less set itself up.
If you're running XP, is the UPnP service running?
It's good practice to always have your main computer wired to the router. That way, you always have control. Hard wire computer 1 to the router and get that up and running first. Worry about the wireless setup later.
Set up the TCP/IP properties for your NIC using 192.168.0.1 for gateway and DNS for now. Set an IP of 192.168.0.3
Once wired, open the router control panel, usually by pointing your browser at
http://192.168.0.1
At this point, decide whether you want to use static IPs on your LAN. If no machines are constantly leaving and joining the network, static IPs are good practice and much easier to troubleshoot.
Once decided on whether you want to use static IPs or DHCP, post back.