What about the DVD player versions (the ones that say PS2/ Xbox compatible.)? Has anyone figured out a gun hack for them? Would that even be possible?
It's my understanding that they work with the Daphne Singe emulator, but I haven't personally used them.
The emulator rips the video files it needs from the DVD, so I don't think the input method of the version you have matters.
I remember having to use an "installer" specific to my XP versions in order for Daphne Singe to convert the video from the originals.
You may want to make sure that file is available before buying.
I was happy with the video quality of the XP CD-ROMs, but not happy with it after Daphne Singe converted it.
So I went back to just using the PC versions as they are. I'm running them at 1024x768 over S-Video to a CRT TV.
I haven't seen anyone else complain about the video quality using Daphne Singe, so maybe I'm just extra picky or something didn't work right.

I have all the games except Fast Draw Showdown. That game has not turned up for sale anywhere in the few years I've been looking for it. I'm starting to doubt it was really released for PC. If anyone has it, I'd like to know it really exists!