try this..............
find the game executable in the game folder, what ever it is it will end in .exe
then right~click on it and go to the properties, then look at the 4 tabs at the top and choose compatibility. then put a check in the "run this program in compatibility mode for:" and ( on the right side of the white box ) you can choose wich operating system to run the game in. now you might have to allso have to put a check in the "run in 256 colors" if its a real old game. when done, click on the apply butten at the bottem right.....