I don't recommend anything from AOL. Their security devices use an unfriendly out of date spyware killer that removes LW. The reason is the program doesn't work properly. There's much better free firewalls. See a list from here WARNING: Viruses on network you should be aware of! (click on link)

I have no idea whether that 2wire device uses UPnP or not. If not then you're better off manually port forwarding. That should solve your problems.

Steps:
1. Most important step: Set up a static ip (instructions in link below.
2. Forward port 6346; you'll find your model at the top-left corner of this page: http://www.portforward.com/routers.htm & then after clicking on your model, look for limewire on the list. Then follow all directions including the static ip step which is most important for it to work properly.

3. Within LW, Manual port forward instructions & sample image & 2 posts after that.

I have seen that the 2Wire Homeportal 1000HW 3.1.0,3.3.0,3.3.1 are supposed to be UPnP capable. So after you log into your device, check to see the UPnP option. If you have it, then enable it & that will save you from doing manual port forwarding. As you can see you may need a firmware update to have UPnP capabilities if your version is less than that listed.