LimeWire will not connect with 2WIRE AT&T

[geekwannabe]

I have used LimeWire successfully on same computer. Upgraded my model of 2Wire router (and service technician did work on my computer)--and upgraded LimeWire---now no connection.
(ie stays on 'starting connection'.....no error messages received, no activity on the connections tab)

Windows Firewall does allow LimeWire Program
On Norton I have editing settings/web browser/Internet Worm protection and ensured LimeWire was added as allowed program
I have also deactivated Norton to test whether or not this was causing the problem---still unable to connect wth Norton not active
I then went to 'HomePortal' and checked Firewall settings
I forced an IP based on the listening port....and since I don't know what I am doing I also forced it on 6346 with a separate name (i.e. I went into allow individual apps, then put in the port range (just used the actual listening port #) and did for both TCP and UDP.
No impact

I have invested way to much time trying to get a connection established, I need higher powers to suggest where there may be user error on my part.

Majority of answers to config questions below. (11 & 14 unsure how to check)

1. OS version? Windows Vista Ultimate
2. What firewalls you have? Windows, NortonAntiVirus and the 2Wire AT&T Firewall
3. How much ram? 2G
4. Hard Disk space available? 134GB
5. Connection type? (eg: dialup, broadband, cable, etc.)
broadband
6. Modem & router brand name & model numbers?
2WIRE (AT&T logo) 2701HG-B
7. Where are you trying to connect from (house, appartment complex, school, student accomodation, work, etc.)? House
8. What version of LimeWire (LW) & Java do you have?
LimeWire 4.14.12pro, Java 1.6.0
9. Who is your ISP (Internet Service Provider)?
BellSouth/AT&T
10. Do this simple test for us. Using your browser go here: http://www3.limewire.com:6346/ The page should say 'Your test worked!'. What happens when you go there? It works
11. Are you sharing the connection with other computers or p2p sharing programs? If yes, please give details of set up. not sure - how do I check?
12. Is this a your 1st try at LW or is this a new problem with an experienced user. new problem, albeit after computer worked on, router upgrade
13. Do you see a brick wall in front of the blue world icon at the bottom of LW's interface? _ click here to see Sample image Yes
14. For those using a modem/router, how is your modem/router set up...are you port forwarding or is UPnP enabled? Not sure how to check
15. What security programs are you using (antivirus etc)? Some people might not be aware that their security suite includes a firewall Norton
16. What country are you living in? Sometimes there are ISPs with the same name in more than one country (eg Clearwire in the USA & also in Ireland).US