Thanks for the suggestions; I was even going so far as to try recompiling it myself, but today the version I downloaded here works fine with no modifications on my part. I'm confused, but I'm not going to complain about it!

Uhh... are you sure about that? I have Vista 64, and 0.71 just crashes on me instantly. My best guess is it's because 64-bit Windows doesn't run 16-bit code. Then again, I installed the 32-bit version of DOSBox. Is there an x64 version out there somewhere? I looked, but couldn't find one.