The default listening port is 6346. You could try different listening ports for each of your LW's. Don't forget to press apply after each one. You might even need to close & reopen LW for it to have full effect, I'm not sure.

Well failing everything you can port forward. But you'd need to do a separate port forward for each computer as only one computer can use a particular single port when port forwarded.

The ip no. of your router is generally the same for each brand or model. For linksys you can find out from the following link.

The steps of port forwarding; most important is setting up a static ip correctly otherwise next time you connect the entire process won't have worked.

1. Set up a static ip.
2. Forward a port such as 6346; find instructions for your model either here: http://www.portforward.com/routers.htm which will also show how to set up a static ip. OR use Linksys own instructions. Setting up a static ip: Static ip for Linksys, & Port forwarding for Linksys

3. Within LW: Manual port forward instructions & sample image & 2 posts after that.

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