Even with a cross over cable, no you cannot. In order to play a game like that, you need a network of some kind to represent two different entities. You need a router dude, sorry.
Jonas "Jackal" Lear
http://www.sbccrew.com
Serving the South Bay Since 1999
u can play LAN without a router, u just need a lan cable connected between the two computers similar to this
http://www.google.co.uk/imgres?q=la...
and connect both pc's with it.
if u dont have it and dont want to buy one then a router is neededcomputers are a second home
NVIDIA GeForce
GS_Toxict51