USGlobalSat BU-353 WaterProof WAAS Enabled USB GPS Receiver
The unit now works, but it was about a two hour effort to get it to work on Windows 7.  The drivers are ancient that come with it, and I had to do a lot of digging around on the manafacturers website and try different settings in Win 7 before I finally got it to work.  Understanding that... the instructions are vague as well!  Here we are in 2010 and the instructions look like something you would get with a toy in a fast-food kids meal!