hey man,
u're in luck, I have the answer to your question! (which you probably found by now
)
pictures burned on a PC are Mac compatible. As long as the pc-burned CDs are not burned images of pc aplications, but are as separate files on the disk, they can be read by Mac
One tip for the future.... get a load of CD-RWs, they're cheap, and try solving your problems by trial and.... hows it go?