DOSBox is only as compatible as the hardware it runs on.

Go into Intel Video card properties and turn off "rotation".

Also edit DosBox configuration (Edit Configuration in Start Menu) and change "output=" to a different value.

Thank you. I will give those suggestions a try.

Also, do you think that having your directory for dos games in your root directory (C:\OLDGAMES\) would contribute to this kind of crash? I've read some stuff in forums about how it's better to put this directory in your user directory in Vista. But I don't know if that would make any difference.

The reason they suggest using your user profile is because that is the easiest solution for people who don't know anything about permissions.

By default the user has full permissions to their user profile so they don't need to bother with messing with permissions whereas if they used a directory outsider of their profile they would have to mess with permissions.

It has no affect on crashes unless you're talking about a game running inside of DOSBox and then if it doesn't have write access because it didn't have permissions then it is possible that it could crash the game.

Okay, I set the output to ddraw, booted up "Rise Of The Triad" again, and in a few moments it bugged out and flipped the display again. I haven't tried unchecking "enable rotation" yet, because I figured that switching to ddraw would solve the problem, but I guess not. I wonder if keeping rotation enabled is actually causing this. I'm hesitant to try sommething else unless I'm fairly certain that it will work. It's such an annoying crash.

I figured it out. Hot keys were turned on, and combinations of ctrl, alt and arrow keys made the screen flip. I just had to turn off hot keys. D'oh.