Well this is a moderately good start to the new year.
I've at last managed to install DraftSight V1R3 after numerous unsuccessful attempts.
However, to do it successfully I completely uninstalled R2.1 and removed the DS application data folder.
That means I am now without my command, menu, and other customisations.

Yes! I know! B A C K U P.
But just what to back up – I simply need a list -- the more I've read, the more confused I've become.
So I first copied all Dasault Systemes and DraftSight related files I could find and now have the following four groups of files: 1. From C:Users Appdata; 2. From Program Data; 3. From Program files; 4. From Program files (X86).

Now I need to know precisely what files to use and how to to use them to update my new installation with my customisations from the previous set up.

[User of DS (Free) Now with V1R3(64 bit) on Windows 7/64 Home Premium.]
10 Jan 2013, 22:37 (NZ standard time)