[CAUT] Hurdy Gurdy

[Jeff Tanner]

Hi all,
I know this is completely off topic of pianos, and I apologize but  
I'm not finding any clear answers anywhere else that satisfy me.   
(and yes, I've been to http://www.hurdygurdy.com )  I thought I see  
if there are any CAUTs who might have a little experience with this  
medieval instrument.

Does anybody know how the Hurdy-Gurdy (or French Vielle a Roue) is  
normally tuned?  I'm supposed to meet with a client tomorrow to help  
her.  Feel free to answer off list.
Thanks,
Jeff