It comes with a program called GPS info. I have the BR-355. If your model doesn't have the GPS info application with it, they do offer it as a download on their web site. It should ocme with yours though as I believe the same install CD is used for all of their GPS'.
I can't speak highly enough about the BR-355. I have never had a GPS that synched up so quickly and was so reliable. In fact, with my truck sitting inside my garage the GPS still picks up satellites and functions. I've had a good number of GPS' and the BR-355 puts the others to shame.