If you have the ZoneAlarm firewall, try this!
 

This is what I did to make ZoneAlarm let LimeWire access the internet and server.

#1: Allow LimeWire permission to access the internet and server by opening ZoneAlarm and clicking the Program Control tab, then scrolling to where you see LimeWire and checking the boxes. If you have done this already skip this step.

#2: Click on the tab marked Firewall.

#3: Under where the Trusted Zone Security slider is, click the button marked Advanced.

#4: Check the boxes that say:
Allow Outgoing DNS/DHCP in Trusted Zone on High setting
Allow Outgoing DNS/DHCP in Internet Zone on High setting
Allow uncommon protocols at high security

#5: Click ok.

#6: If LimeWire is open, disconnect it by going to File & hitting Disconnect. Then click Connect. At that point you may get a message saying ZA blocked something. Click ok.

The connection lights should completely light up within a few minutes depending on your connection speed.

Also note that if LimeWire cannot connect the next time you boot up, disconnect and reconnect and it should be fine until you log off again. I have to disconnect it and reconnect it once after I boot up.

i was hoping you could help me. i dont have zone alarm but i have norton anti-virus and the normal windows security on windows vista. i just got this computer and i have downloaded limewire pro but i cannot get past the firewall to download any songs. it never fully connects. i have read EVERY post about how to go around it and nothing is working. i am using the same wireless internet on this new computer as i was on the other one so i dont know why that would be a problem(but it could be) and i am stuck!!! i just cannot figure it out!! help me please!?! thank you!!!