I didn't know you can run winnt.exe in DOS. Isn't it a 32bit application? Wouldn't you have to allocate some extended memory? It's been so long since I've work in DOS, the memories are gone now.
You won't be able to crap in DOS if this has a raid card, no driver is loaded in DOS by default. You'll have to go to the CD installation approach and supplying the driver when it ask to press F6.