How to run DOS programs on XP?

[WhatThaSmurf]

So the other day I remembered out of the blue a game I used to have on my first computer. I went and found it today, which took forever to find. Well it came out in 1994 a little while after Windows 95 (apparently OS follow the car rule for years) and it was run through MS-DOS. And for some reason, nothing is telling me how to either restart in DOS or run DOS programs on Windows XP. I really want to play this game, and it is making me angry.