OK!
With a bit more help from forum members, I finally managed to get regsvr32 to work for SoundStage.ax...
Then placing Dxshell in the folder and ran a vst scan...
It added a slew of other plugins as well (almost all Sony plugins that came with CDArchitect) and Soundstage will now load and work... except...
It sounds crunchy! If I disable the pluin, the sound is clear.... Now what? ;-)