Thanks for the reply, thecreator.
As it turns out, I tried basically what you suggested the other night and it seems to be working.
I went to the atheros drivers site that someone linked to somewhere in these forums and downloaded the modded win xp drivers.
Uninstalled the D-Link stuff, used device manager to update drivers, custom location, picked the downloaded driver, and let Windows manage the connection (no d-link install).
No problems thus far.
Just as a follow up question: Will this in any way affect the speed/range of the card? I installed this card in my soon to be brother-in-law's machine so that when we move to our new house (two doors down from them) he'll be able to pick up (hopefully) the signal from our wireless N network.