Save Game Editing Troubles (Vista-64)

Hello. I'm about to re-play Arcanum for the ump-teenth time and have discovered that, running Vista-64, I can't find a way to edit my save games.

As far as the game installation goes, I've patched to 1.0.7.4 and then applied the UAP as well as the high-res patch. The game itself runs fine (and many thanks to Drog Black Tooth), but I can't find a way to register the files that come with ArcEditor -- not a problem I had while running XP. UAP is enabled, so I've been attempting to run regsvr32 from an elevated command window, but the error message insists that the files aren't there. ("There," being c:\windows\system32\)

I have also tried, unsuccessfully, to manually edit the files using these instructions. The files aren't corrupted, but I see no changes (just trying to add character points). This should work independent of OS, so I'm clearly doing something wrong.

Any suggestions would be greatly appreciated.

 

and

From here

 

Thank you very much. (I wonder if the x64 works as well as the x86.)