it would be simpler, but more expensive, if u got cable/adsl and connected them both to a router
most have a 4 port swicth on the back
and if u wanna spen a bit mor u can even get one that alows u to connect a printer
install the drivers on both pcs and voila
and also once u had that box all the cables u would need would be to cat5 cables
they would alsoo be set up for lan gaming then