Thanks Richard. I've contacted Bad Flash and Gigabyte and I'll see what they have to say. Gigabyte has a bad rep for getting back to you, though! Also, as the dual BIOS chips are permanently installed on the mobo, I may be out of luck. The ASUS board looks good at £70 in UK, I may well try it...
I also had an Asrock K7VM4 mobo turn up DoA yesterday (for my Dad's e-mail-only 'puter). Have I upset someone or something?!
cheers
Scroggs