[U2Lynne]

I don't think you need to do anything in that tab of your preferences.

When you go to a terminal window and you type "ipconfig" (I hope I got that right this time!), you should get a listing that includes your local IP (192.168.1.xxx). Make sure that local IP is the one listed in your modem with the ports you want opened. Then, make sure that those same ports are the ones listed in ABC. Then, check on canyouseeme.org to see if that port is really opened for you. If all of this is done as I wrote and it still is not open for you, I would start to suspect that your XP firewall or anti-virus software is firewalling you.