The OnCourse Navigator 5 product demonstration is posted. The video demos show most of the important features and improvements made to version 5.
Here is the link:
http://www.oncoursenavigator.com/demo/default.aspx
Side Notes:
-> Dell Axim x51v running Windows Mobile 5: OCN5 is also fully compatible.
-> iPAQ hw6315 and 6515: OCN5 is fully compatible with the 240 x 240 screen resolution.
Enjoy.