Great questions! I guess I didn't give you much to go on!
I am using a Motorola SURFboard SBG6580. I went to the router address, logged in and clicked on the advanced tab, then the port forwarding button. I filled in the part of the IP Address that wasn't filled in already (the last 2 numbers), entered 5832 as the start and end port, clicked TCP as the protocol, and checked the enable box, and hit Apply.
I then went back to My Media Center Config, and clicked on network. The I clicked on TEST PORT FORWARDING. It comes back with a window that says "port forwarding is not sucessful".
When i scanned for wifi to set up the iphone software, i had to enter the date manually, just so you know.
I would send a screenshot of my router screen, but I can figure out how to attach a picture....
Thanks for any help!