Multi-Player on simple pc network???

[redesterdragon]

Hey Guys I was curious if any one knows how to play a 1 on 1 vs. game against a friend on a simple network.
Here is my setup:

2 hp 8200's Both running mtg Duels of the Planes walkers 2013 Theta
1 8 port D-link switch
ip congfig (dhcp)

I am trying to achieve this without an outbound link if possible. any help would be very much appreciated.
thanks

Brandon