Jeez Dune2000 is an old title I remember it very well.
And it was a DOS game rather than a Windows game. So I think you need some old DOS emulators that you can get, since the game uses old VGA style graphics I think you will need a UniVBE emulator of sorts.
Here have a look at this its about DOSBOX which should work
http://www.columbia.edu/~em36/wpdos/vista.html