[Ham-Mac] Map Source on Mac?

[Rob Van Wyck]

Hello from Thunder Bay. I've lurked on this one for years, often  
learning invaluable tips and ideas. Now when I have a question I  
confess it's not strictly Ham related ... hopefully in this age  
convergence someone here will help me out, if not on the list then by  
pm.

I purchased the Garmin Map Source v 2.0 software and have it running  
on a buddy's pc. I'll drop over and put maps on my GPS when I need  
them. He's happy. I'm happy. But I'd like to do this on my iMac G5.  
Are there any map programs that would read the garmin maps on the  
mac? Anyone have experience in this area?

many thanks, and a happy Easter to all,

Rob VE3FLB