Check Connection problems? Check here first! for answers to #3. Make sure UPnP is activated. #2 has been answered in another thread. #1 If you have another firewall other than XP firewall, then disable XP's firewall & configure the other one you have instead.

You said you have a Voyager 2000 with firewall off. Have you considered port forwarding it or enabling UPnP for it?

Can you give us a total desciption of your set up (sorry repeat questions for what you've already supplied):
1. OS version? (eg: Windows 98)
2. What firewalls you have?
3. How much ram?
4. Hard Disk space available?
5. Connection type? (eg: dialup, broadband, cable, etc.)
6. Modem & router brand name & model numbers?
7. Where are you trying to connect from (home, school, work, etc.)?
8. What version of Limewire (LW) & Java do you have? (Go to LW's menu Help>About LW...) Will show both LW & Java version.
9. Who is your isp provider (Internet Service Provider)?
10. Are you sharing the connection with other computers or p2p sharing programs? If yes, please give details of set up.
11. 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?

Have you checked with your ISP as to whether they give the thumbs up or down to p2p sharing. Some nowadays block or shape bandwidth for p2p sharing.