Been there done that.
Taken from the Official doom FAQ part 2
++: If you have a network, try setting up a network game with three players. The three terminals should have the parameters:
"doom -devparm -net 3 -left"
"doom -devparm -net 3"
"doom -devparm -net 3 -right"
Then, set up the left and right terminal monitors next to the middle monitor, in a virtual-reality type configuration. When you turn your head, you see the screen turned 90 degrees! This ONLY works with versions 1.0 or 1.1 of DOOM.
Grenade because that would have made doom (and google earth) much better.