I just purchased a 2535M Live specifically to benefit form the new HD traffic service. Here's the problem, I bought it in the US, but I live in Canada. I travel extensively in Canada and the US and thought I would have acces to Traffic in both countries. What can I do to make that happen, can I change the SIM card when I am at home? Can I register for the service in both countires? Please help, because if nothing can be done I will be forced to return it.