Thanx Boss for the URL, I'll react with more links in reply to your other post.
What surprised me:
1) it is an dot-com site, and NOT an dot-it *italian* site. For as I know there was earlier a .it site which held the same files
2) The GEM WK4 Plus OS is here available for download, whereas if you go to a dealer you have to pay much for the same disk.... Take the advantage Wk4 users