Edit: No wait, it would seem that I'm an idiot, on both counts. It's installing fine now, sorry for wasting your time.

Basically, I installed Daggerfall, from the disc, using DosBox (I'm on Vista, and it's version 0.72). It worked, but not very well. A bit of fiddling helped a bit, but not much. So I decided to try installing it from a ISO image I created instead. Now it's not working at all. For some reason, it …