Did you try the network setup wizard? Y/N ? This will give windows more info than if you just assign IPs. Before that i would let the NICs automatically optain IP in properties. for one PC then use that IP and add 1 to last digit example 192.168.1.64 then add 1 to other pc IP 192.168.1.65 and then click start>> my computer>>C:drive (with games) and right click on drive>> go to properties and then>> sharing tab to allow sharing. then click share this folder or drive on the network.(i am using WinXp However and thats what I see) restart to allow changes and try the pings and the games.
Regards
Regards