Thanks for the reply.
I forced the IP in Limewire as you described. I ran the test and it came up false. I think I port forwarded ok, but the static IP address thing is confusing me. I read the post on portforward.com and I'm not clearer on the concept. I know my private IP address (which doesn't change) and my external IP addres (which doesn't change). How do I make a static IP address, or do I have one already? And if so, how do I know that? I think I'm getting this confused.
Also, even though the cable ISP tech guys told me that the cable modem was functioning properly, could it be blocking the 6346 port?

Thanks.

dijon