Okies, for those of you who have routers or are planning on purchasing one, here is something to remember when setting up your home network:
1) A router (or most of them anyway) will only allow one PC to be a DMZ (basically directly connected to the internet).
2) You must know how to access your routers set-up menu to designate your primary PC as the DMZ. If you don't, you will get booted to the server screen from time to time (happened to me alot after getting router and just recently got it resolved).
3) Remember that you do not need a second IP address from your ISP, the router will assign one automatically. If you buy a hub, you will need the second IP address for the additional computer.
Just wanted to pass this information along to others who might experience the same problems I did!