|Well, I'm really glad you don't think it has to do with the wireless but if you'd like help, how about trying my troubleshooting step and answering the question.|
If you can plug in your computer, do so and try it, do you connect when wired?
Just FYI, when I say "if you can plug in your computer" I mean, plug it into your router. If you can't you may have to go directly from modem to PC. The point is, figuring out if the issue is your wireless network or not.