At risk of being dumbass of the day I can't load the fantastic tweakset.
I download the zip file
Extract it
Start XWD6
Click Disc Design and load the unzipped folder exactly as the manual states.
All I get is a index.html file !

Where have I gone wrong....I have deleted and downloaded and tried this several times, each with the same result.
Its as if my XWD does not recognize the files !
I see them ok in win explorer.

Help please, I feel such a twat.