Thank you for the link.
I have tried it for the 852GM chipset. I can install the driver, no problems reported in device manager.
So far, so good.
But, I can't set the second display to "extended desktop". Just clone mode works. Something that does work on the same hardware with Windows XP installed.
btw I don't need any Aero or other fancy features, just the samae as was possible with Win XP