As of yesterday, nothing had arrived, and I called AT&T this morning to try and figure out why. After an incredible amount of time on hold, I finally got through to at technician who told me that, "They don't send out anything anymore if you don't order the hardware. You just have to call us when you've plugged in the DSL modem and we'll talk you through the configuration over the phone." Well, it would have been nice if they'd told us that when I placed the order in the first place!
I hope that the next time I'm up there (which should be a week from this weekend because I have to work over this weekend to make up for the days I took off earlier this week), I'll be able to get this resolved, because Lisa called last night and said that the wireless card in the one computer she allowed to have a card appears to have stopped working, so she's completely cut off from the internet, meaning among other things that she can't call me on Skype nor stay in contact with her friends on ActiveWorlds.