Here's a list from New Egg where I'm likely to buy from.

http://www.newegg.com/Product/Produc...blet&x=18&y=31

I haven't used one before but am looking for one to make mapping a bit easier - the mouse drawing routine is grating.

BTW - I run the 64 bit version of Windows 7 - there's at least one tablet in that list I will be skipping over because I don't want to deal with 32 bit drivers.