After you have mounted the image file activate virtual hide CD (if you have it, if not, download it) and hide your virtual drives, then you can also use anti-blah or safedisc 4 Hider, actually try both anti-blah and Safedisc 4 hider, I dont know why but sometimes games wont run unless I have both running,

(I've found that they both work on many different games reguardless of protection), then once you have done that look for the virtual hide CD icon (it should be a disc with a red tick on it but once activated the tick will turn to a big RED CROSS) on the system tray and right click it and hit exit. Once you have done that just start the game and hopefully it will run. Changing the games exe file to 2000 compatibilty might help too.
I've done this with many games and they never work until I activate virtual hide CD but get rid of it on the tray.
Good luck anyway, I hope it works for you!