Originally Posted by JEFFJAGUAR

I was reading about this on another blog and forgive me if this info is already in the thread.

However, it is claimed that for visa and amex, a workaround is to enter the three digits from your Canadian postal code followed by 00. I read through a bunch of replies and it seemed like it usually worked with visa and Amex but not with mc. Of course, it might also depend on which bank your Canadian card is issued by (do the banks in Canada all usually offer both mastercard and visa from the same bank...I never understood that as I thought they were competitors).