The installation process Garmin 5.00.60 is the second post in this topic.

Post relates to installing Garmin 5:00:50 (and previous versions of 5:00:30 and 5:00:30)

Tutorial for installing Garmin Mobile XT 5:00:50 (or 30 and 40) and tutorial installed Mapsource, a map to mapsource and explains how to transfer maps from MapSource to a mobile phone.