If you're hosting a game besides any Lynsis router, just post your router IP to your buds, and they'll be able to getinto any game behind the router typically. Otherwise, just go into the router settings and open the ports for a specific machine, or if you don't know how to do that. Put your machine on the DMZ until you're done hosting the game, then remove it.
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--Soyo KT333 DRAGON Ultra (Platinum Edition)
--AMD 1.4 @ 1.54 (11x)
--768mb of PC2100 (@140FSB)
--Asus v8200 GeForce3 @ 210/490
--Maxtor 40gb Quiet + 2 IBM 40gb 60GXPs (removable) + 8gb WD
--Audigy
--Maze 3, DD Gf3 block, 2x BIX, Eheim1250
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