Glad to help another user, but yours is a really tough problem to solve (because the problem may be upstream of your router, and thus out of your hands).

First, to see if it's the router, try connecting directly to the internet (plug the asdl modem directly into your computer, and try your mail or web browser to confirm connection. If they don't, you'll have to set new TCP/IP control panel settings.

Post back and we can try from there.