If you want to enter the coordinate of the North american BMW dealers into your GPS, just go to: http://gmccurdy1.home.att.net/Dealers/Dealers.html and download the zip file. (Canadian and American dealers are listed).

A very neat and easy software to upload or download your way points is EasyGPS.
This is a free software working very well (I did some test with my Garmin).
You can download it at: http://www.easygps.com/download.asp
It support a lot of different GPS.