DOS boot disks won't help you if you have Windows XP or 2000 on an NTFS partition. You still need HD space to install the game.
The Sound Blaster Live! cards had crappy DOS support and those are fairly old sound cards. You're probably SOL with newer sound cards, even Creative made ones like the Audigy.
Ugh, you're right. I forgot about the NTFS thing. What a shame. I'm fortunate that I've got several computers at work and home that still have Win 98/DOS on them that I can use if I ever get the fancy to play a DOS game that requires the real deal.