Most routers will not allow you to have services, like web services, voice services, VOIP, email server, etc. And for some good reasons. Normally that would be malicious traffic on a home network. however, when your a home server builder, that is all part of the game! Now there is way to many routers and ports for us to list on our website, so we have enlisted the help of the worlds best port forwarding site to help you: http://portforward.com/
they even have a program you can download on secondary computer to test your port connectivity. You can get that here: http://portforward.com/help/portcheck.htm
All the guides you will need are located on the left side grey bar.