Ok, I tried the McAfee thing, it found problems and fixed them. So I started up Limewire, and it worked! It connected fine, I had searches running, my internet was fine. (Previously every time I opened Limewire my internet got messed up until I turned Limewire off again) So I was thrilled.. for about 5 minutes. Then Limewire lost it's connection, and my internet stopped working again. Back to square one.