alright, here's the background. i recentlu moved into an apartment, and between my roommate and i, we have 4 computers. since we're planning on getting cable internet shortly, we've figured that we should go ahead and set up all of the computers on a router, so as to be able to play LAN games. now here's the fun part. i don't know much about routers. can someone explain the basics of them, or even the average price of a decent router?