Most likely it is because the game is kind of old. That does not mean it won't run. I do not know what type of copy protection it may have, but you could try and copy the install disk to a folder on your desktop. Name it anything you want. Then right click on setup.exe or whatever it is called, and select properties. From there go to the compatibility tab and select Windows XP. Then run the set program and see if it works.
If it does, you'll want to do the same compatibility thing with the game shortcut.