Which Airport Extreme Base Station?


I'm trying to decide if I should buy an Airport Extreme Base Station without modem and antenna port (this is model M9397LL/A). The base station with modem and antenna port is model M8799LL/A.

Here's what I have: G4 PowerBook with cable connection. I also have a PC that shares same connection. What I want to do is go wireless for two room radius in my apartment. No great distances here!

Am I good to go without modem and antenna ports?

Thanks for helping.