Like a number of the other folks on this thread I collect classic flight sims. I've been unable to get the windows or 3dfx versions of Apache and Hind to run on my Vista 64 bit system (I get a direct draw error as soon as the introductory videos end), so I finally gave up and installed the DOS versions of both games under DOSbox. I have to turn the detail level down about half way to get acceptable frame rates, and of course there is no 3d acceleration, but aside from that, both programs work ok. They will never take the place of Black Shark, of course, but a quick run through a mission or two is lots of fun--nostalgia at its best, really, sort of like when I fire up Gunship 2000. So if nostalgia is your thing, it might be worth giving the DOSbox approach to Apache and Hind a go.