1. OS version? Windows XP Pro SP2
2. What firewalls you have?Windows Firewall w/ an exception for Limewire.
3. How much ram?1 gig
4. Hard Disk space available?300 gigs+
5. Connection type? (eg: dialup, broadband, cable, etc.)High speed wireless to local ISP
6. Modem & router brand name & model numbers?Zyxel X550
7. Where are you trying to connect from? HOUSE
8. What version of LimeWire (LW) & Java do you have? LW 4.14.8 Java 1.5.0_11
9. Who is your ISP (Internet Service Provider)?Montrose Internet, Montrose CO. USA
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? Zyxel Router connects to ISP. There is a home network with 2 computers accessing the internet thru the router.
12. Is this a your 1st try at LW or is this a new problem with an experienced user. I have been using LW for more than a year with a starband connection. A couple of months ago I changed my ISP and have the connection described above. A few days ago I tried accessing LW for the first time since the Isp change.
13. Do you see a brick wall in front of the blue world icon at the bottom of LW's interface? Yes and it stays there even if I shut off the Windows Firewall.
http://www.gnutellaforums.com/attach...1&d=1158099342
14. For those using a modem/router, how is your modem/router set up...are you port forwarding or is UPnP enabled? Port forwarding
15. What security programs are you using (antivirus etc)? AVG without firewall.
16. What country are you living in? USA

I have tried everything i can find to do in the forum and the Connection Problems section of Support.

Delete LW's preferences folder when LW's properly closed. See point 3 here & also point 2 if you've used older versions of LW in the past (there could be a folder in either location).
Fixes for LimeWire
This will kill all of your settings within options, you'll have to go back through afterwards & reset things. If you're not sure of your settings, go through LW's tools > options & write them all down, so that you can reset things later.

In LW, file > disconnect. Wait 5 minutes, file > connect.

When you set up port forwarding, did you make sure to set up a static IP address first (won't work, otherwise) & did you use these instructions?
Port Forwarding for the ZyXEL X-550
Are LW's listening port, port in the 'manual port forward' box & port forwarded in the router all the same number? They should be.

I can't find any info to suggest that your ISP are anti-p2p. If those 2 earlier suggestions don't work, try changing ports. Tools > options > advanced > firewall config. Change LW's listening port to 64049 (or try others in the range of 49152 - 65535). If you do change ports, remember to also change the port number in the manual port forward box & port that you've forwarded within your router.

Is Java 1.5.0_11 the only Java version that you have on your computer? Go to add/remove programs & check. If you've got others there, remove them. Then restart the comp & see if LW connects.