Netgear RP614 router and Yahoo File transfer/voice Help!!

[i_go_comando]

 I bought the router last week and it works great. Today though, i went online on Yahoo to send my dad some pictures in Canada via the file transfer facility on the messenger. I couldnt send anything or use voice conferencing. I spoke to a friend who says i have to configure the port forwarding  on the router to enable. I went to that part but I havent got a clue what to do at all. Its a massive mine field for me and i have never used a router before. Yahoo tell me I need to put port 80 and a few other items but where??  Please help as I feel a total technophobe.

[j2buttonsw]

Your router will have 2 IP addresses, an external one from your internet provider and an internal one for your internal network (which consists of your router and any PCs you network it to). Forget about the external address, you need to concentrate on the internal one (which most likely to be something like 192.168.1.1). Your PC will have a similar IP address which has been provided by the router (as it is acting as a DHCP server). Using the above example your PC will probably be 192.168.1.2. How do you find out? Start > Run > type in cmd then OK. At the DOS prompt type in ipconfig then enter. You need to configure the router via web page so use http://192.168.1.1 as the URL then find the port forwarding. According to this http://www.chebucto.ns.ca/~rakerman/port-table.html yahoo uses ports 80, 5050, 5000 and 5001 so forward all this TCP traffic on these ports to your computer's IP address (192.168.1.2)