Hook up CASIO CTK-720 to Imac with Snow Leopard (10.6.2) G-Band

Just did it today. Hooked up CTK-720 to Imac with Snow Leopard (10.6.2) using GarageBand.

Steps:
1) Go to : http://code.google.com/p/casiousbmididriver/
2) Download the CasioUSBMIDIDriver.plugin (see the two choices on the right side of screen)
3) Place the CasioUSBMIDIDriver.Plugin file into the MIDI Driver subfolder: Macintosh HD => Library => Audio => MIDI Drivers
4) Restart
5) Plug in USB cable, open GarageBand, turn on Casio
6) In GraarageBand Open New Project, Start by using Piano, Select Keyboard (command K) in the Window menu
7) You should see the keyboard being played on the screen.

PS: Thank you Francois Ferland.