Two PC's internet shairing

Hello,
i have two PC's and i connected them throgh cross cabling and ran network sharing stup on both and these systems are running on winxp service pack2 and i also have inter net connection of dsl. A system which have inter net conntion have two lan cards one of them have inerter net connection and other is on local area network through cross cabling plz tell me how i can share inter net on both...