Well first off you should mention what maps you are wanting. Are you wanting USA_Canada? What model of TomTom do you have? If you don't know go to the TOM TOM homepage and search for What device do I have. Then you enter the first 3 digits of your serial number your looking for. It will tell you what model and how gigs it is. Then after you have all this info I will be able to point you in the right direction.