Well, I guess it's all good experience.... I'll look more carefully next time and not take someone's word quite so much at face value... This one has 2000 Pro Client written all over it... maybe that was a clue..... so I installed Me and upgraded to 2000, 'cos it wouldn't start on it's own.
Oh, and I boot OK into DOS with the Me startup disk, so I'll just use that if I have to.