How to run old Windows games?
It depends on the game. Some games can run without problems on modern Windows systems without problems, while other games need more attention.
A lot of Windows games won't run on Windows 7, 8, or even Vista. What can you do? Well, if the game is available on GOG.com, you can buy it for a few bucks and be certain that it will run on your system. Otherwise, the best approach is to use a Virtual Machine.