Um... someone misunderstands someone. I'm saying that Vista 32 bit does not have WOW32 (technically it does, but it doesn't do anything) and thus does not support 16 bit software.
I know. That's what I was saying too: XP has WOW32, while Vista64 has WOW64 which doesn't do 16 bit.
Moral: Get some other chump to build PCs for you.
...Or get a case that's designed well.