Finally hung up, called back, and got someone on the phone three minutes later - this guy knew what he was doing. I was right - when I had to use dial-up in NY it messed with the Airport system, so he basically had me reset the wireless card in the computer, which just was typing in about three little things, and all should be well now. And I'm NOT using dial-up ever again. Thankfully, the two places I'm staying in, while not having wireless, are both cable modem (Time Warner, like mine) so all should be well. I might even be able to glom onto someone else's wireless, too.