I was wondering on how to replace the 01 Navigation. Is it in the form of a disc, or hardrive.

And any idea on what year version 2.1 disc is

 

It's a DVD disc in the navigation computer found in the lower right corner of your trunk, under the smaller floor removable panel. It sounds like you have Data 2000 version 1. Is this the version # that comes up when you check the version on the navigation screen? I have a used, but in perfect condition 2001 disc for 1/4 the price of the new one if your interested.