If you have a car, a valid driver license, license plate and insurance from other province you can drive in Ontario anytime till one of them expire. To renew you got have to provide the address that prove your residency in that province to get thing done, they only send by mail, if you have friend there it will do the trick. If you want switch to an Ontario license you have to register an Ontario address first. By doing that I think you can only use the old license for 6 month (I may be wrong) but you can go direct to road test for G license at the same time