Internet connection HELP??? PLEASE!!!?

I agree with the last comment. Before you start spending money replacing things as someone suggested, call the ISP tech support and see if they have a problem on their end (or, in the modem, which they should also support). They may be able to see something in logs or statistic counters. And, there's at least SOME chance they will say, "Hang on...let me look....hmmm...that's not right.....okay. It should be fixed now"