Just copy/paste this into a reply with your answers

1. What's your connection like - do you have any green bars at all?Yes - 5
Is there a brick wall in front of world ? Yes

2. Do this test & see if it works. What does it say ? Your test worked!
http://www3.limewire.com:6346

3. What are your details

OS ? (Win XP, Mac OSX etc.) XP
How much free harddiskspace ? Lots -- 19 Gigs
How much RAM ? 384 meg
LW & Java version ? (In Limewire press Help>about LW & you'll see) Java 1.5.0-05
What Firewall you're using ? Norton
Any Antivirus/spyware programs that youre using ? Norton
Modem/router brand & model ? Don't know
Are you using portforwarding, UPnP or nothing ? UPnP(Tools>Options>Advanced>Firewall Config)
What is your listening port ? (Same as above) 26338
ISP (Internet Service Provider) ? xplornet.com
Connection type (Dial-Up, ADSL, DSL etc.) + Speed Up/Down if you know ? Tower wireless high speed (2.0 G)
Where you connect from (home, school etc.) ? Home
Are you sharing a connection with other computers ? No
Has Limewire ever worked for you ? If so how long have you been using it ? Yes. Had been using it successfully for 2 years.

Have you tried using any other P2P apps & if so, do you have the same problems (BitTorrent, Shareaza etc.)? Not recently.

THANKS AGAIN for your help.