It sounds like you need to go thru the port forwarding again. 1. Setup static ip 2. Forward the port as in the instructions I gave earlier 3. Force ip within LW
The other possibiliy is SP2, but if you can connect fine on dial up then I don't know about that. SP2 apparently reduces connectivity & resets firewalls back to default. I don't suppose you did the bug report test when you were on dial up.
Bug Report instructions & sample image True/False?
Is your router a modem-router or do you have a separate modem? How many comp's are connected?