First time I D/Led the zip to my desktop and extracted it to the effects folder (the "real" one, not that vista "virtual store" thing).
When that had the result I illustrated in the screenshots from my first post I deleted the .dll's and extracted instead to a folder on the desktop, copied the dll's from there and pasted them into the "real" effects folder. Got the same result...the effects aren't there when I open PDN, and when I check the "real" effects folder it says the folder is empty until I click that "compatibility files" icon at which point it shows me the dll's off in "virtual store" land again. I know they're there, Vista knows they're there, and even this forum now knows they're there.
I just can't figure out how to let PDN know they're there.