manning1, please navigate to my favorite softsynths of all time right here:

http://www.genuinesoundware.com/?a=showproduct&b=37

These are the freeware versions of these instruments. Try any of the Mr. Ray's for very authentic, non-sample based Rhodes and Wurlitzer electric piano emulations.

These are physically modeled soft synths - not sample playback devices. They put a nice big load on the CPU, but they sound like heaven. Once I started playing with these back in the day, I simply could not go back to recording midi without the real-time funk that these provide.

-Scott