by regerstering the software licence key in the fourm,,,user control panel/profile/serial #,, this should allow acess to the download section ,, where you can get the latest version
check with the former owner to see if he regesrtered it in the fourm ,, if he didnt ,proceed , if he did then there might be some transfer issues needed to be resolved
in fact the DVS software is a intial install software and if you want to get a copie of the software it has to be regerstered for admins to give a link for the original files (on cd )updates to that software where added on the intial install , unlike Cross which is put out as a standalone up date