Well, as I've said, you could try an unactivated copy of Windows
XP to bypass it. Chances are that it won't allow, because there are
some detection codes which detects it.
My way will be to get a Linux distribution (any one will do),
format and install Linux. After this, reformat again and install XP
(using a previous legitimate copy that you have to save the money
buying).
That way, Vista will be gone for good.
