Welp, I'm embarrassed for not checking there first, since I had fetched a few other things from that site earlier, lol. Thank you so much for pointing this out! It would appear that this is one and the same as the binary I was searching for in those dead warez archives, down to the matching password and serial number.
I'll pick the installer apart with unshield and some other stuff to see what we've got, but I did just finish installing it in an XP vm. My directory tree sounds a little different from yours though. Below is a tree view of some files that I believe we may be talking about,