dos drivers? huh? Are you running some really ancient OS?
You shouldn't install dos drivers at all unless you're running like windows95 or older. Actually, installing dos drivers in XP or vista might even screw it up.
Anyway, you shouldn't need to install any device drivers under XP or Vista for DVD writers. Any DVD writer that isn't ancient should be fine under Vista (with no user-installed drivers). The fact that its 32 or 64 bit version of vista is irrelevant too.