I scanned my computer and found no viruses. Perhaps I have some outdated driver, but I have no idea which one I'd have to upgrade.
I've altered IE's proxy settings, only to have them jump back to what they were as soon as I try to connect somewhere. And as I said, when I use a different connection, IE works just fine. It happens whether I'm plugged directly into my modem, or if I'm going through a router.
And I'm not being defensive here, I'd be glad to be proven wrong if it would make my computer work properly. But if I'm really that incompetent and you're really so computer-savvy, please tell me what the problem is and I'll be glad to admit you were right.