Casio CZ/ VZ/ FZ - Pro Series

CZRider for the Atari can be downloaded at:
http://tamw.atari-users.net/dwnloads.htm

This runs well on WinXP using this emulator:
http://steem.atari.st/
There's a guide to set-up with easy to follow instructions.
Midi is easy, as well.

Setup is fairly simple. This editor was released by Caged Artists and 
is available as a free download. The emulator is free, as well.

The editor gives you a nice graphic interface, as well as saving and 
loading banks.
For the editor, there are a couple of text files that give some 
instructions, but the program is fairly simple, so you should find 
your way around fairly easy.

Should you decide to try it, I can post the settings that worked for 
me.