Hi There,

I can't help you with version 17 software, but version 18 I can help you with.

Go to http://www.e38.org/nav

Download v18-key.zip

This file contains two compressed files, one is for the actual Operating System and the second one is for the KEY CD that is required if you are upgrading from earlier versions on the MKIII system.

This zip file also contains the CloneCD software that is required in order to extract these two files.

So it's the complete package - all you need are two blank CD-R media.

Which system are you upgrading? MKI, MKII or MKIII?