|I'm sure you don't have to use the program that came with it and can instead use the Windows utility, which I know saves the key.|
Open up your Network Connections window, right-click the Wireless Connection, and select "Use Wireless Zero Configurationl" (named something like that).
I remember on my old computer using a Linksys wireless card in Windows XP, I could also right-click the Linksys program in my notification area and disable it, thus automatically using the Windows WZC utility.
If the WZC service isn't started, read this article on how to start it: http://en-us-support.belkin.com/app...
Apologies if I don't respond to your reply immediately. I don't check this site daily, but you're welcome to PM me as a reminder.