Thanks Ghost!
After searching on Google I learned that Rapid Rote is the military name for the software made by Before You Know It.
http://www.byki.com/
The intro level software is free with unlimited uses and they have many languages available. They have a detailed FAQ page that should answer any questions one might have.
After playing around with it for a few minutes I can say this would have had a substantial positive impact on my vocab. knowledge.