I cann't help with the driver, but I THINK I have seen the operating disk for some of the different boards, posted on Casio's European site. Here is a link to the wk-3500 Europe...try backing up to the 'home' site, and look around. Best reguards, Jim
http://www.casio-europe.com/euro/emi/cms/wk3500/

[This message has been edited by Jim Wintringham (edited 04-12-2005).]