Steve, I was going to reply to your email on this point, but forgot. If you have an MSDN account, then this usually has a few versions.
Also, I've managed to find old versions on EBay at a good price. Buyer beware of course - I always went for the boxed, sealed ones - there's a lot of pirated/questionable copies around (or there used to be).
Another place worth looking but I haven't used, might be the third party sellers on Amazon?