Here's a trick to getting MapSource, and it works! Best part is, it's right from Garmin with no hacks or cracks.
Download the Training Center:
http://www8.garmin.com/support/downl...ils.jsp?id=835
Install it (you will need to be able to hook a Garmin up to your computer, so have one handy, even if you borrow it from a friend)
Then download the MapSource update:
http://www8.garmin.com/support/downl...ils.jsp?id=209
Install it.
You now have full blown MapSource, enjoy!