I've experienced this problem before with Fallout Tactics. It's likely the same problem, so I'll give you a few steps.
1:Try running the program in compatibility mode for Windows 95/98/XP
2:If that doesn't work, you'll probably have to stick to classic mode, which is what I did for tactics.
3:If...
Title is pretty self explanatory. What ending do you think would benefit New Reno the best, weather it be for New Reno's growth, or your own personal enjoyment? Personally, I like the "Ash Friday" ending the best, but that's probably just out of my love for mob movies.