Hey guys....just thought I should let you all know that I got it to work on my first shot. Here's what I did....
1. Downloaded the three files after getting the links from strctlylo
2. Reassembled the iso file with WinRar
3. Burned to a DVD-R disk made by Ritek/RiData with DVDecrypter in iso write mode.
4. Put in DVD drive in car a wait a few minutes.
5. Drive and enjoy your new maps.
Any questions, let me know.