Check it out! I found it! I was just about to give up and buy a PCMCIA adapter and a PCMCIA to USB card, (I connect my N400 to my laptop via USB - also purchased at The Supply Net) when I found the following:
http://www.thesupplynet.com/productD...fm?prodID=7001
It won't be shipping until the 21st, but that's the only thing I've seen yet. By the way, Sprint doesn't charge me to connect my laptop via my N400, on the Vision plan.