Re: Using a home computer as a server
people rent servers because they want a 16 man server with most people under 50 or 100 ping. You're not gonna get that from basically any residential connection out there. You rent T1 and OC connections, which is why it costs like 50 bucks a month for a server.
If you want to play your friends on a server, download the files and go for it. If you want to admin your own pub, you need to look into renting one.