I went to the keyboard website and downloaded the 'old' driver for Vista. It is dated 2002 and runs in XP mode. After loading it, everything works again. Interesting that the 'new' Windows driver dated 2006 seems to be the buggy one. I guess that is why they want the XP driver for my keyboard.

I read several blogs and it seems like many people are using the XP rather than the Vista driver. If the 'new' old driver does not fail, I'll post again to help anyone else suffering with Vista.

Thanks to all for your input.

R