Playing Games w/o IPX support over the Net

is there anyway to play games, that do not have ipx support, over the net?

i’m trying to be able to play some of my old games over the net. they’ve only got LAN support and modem play, and modem’s play out of the question.

is there a program similar to kahn that simulates a LAN environment? i’d use kahn, but i’m on XP and kahn doesn’t support XP :(.

I’ve come across programs for warcraft 3 which forward LAN packets or something like that. anyway to do this for other programs?