Thanks Phoenix...
I am getting the impression (the more I find to read) that it may not be possible...unless I can find a dual DVI cable. Matrox I know carries one, but I think they only work with the Matrox DualHead cards (200MMS, 550DVI, etc..)
Even if I find a dual DVI cable, the next question will be - will it work just like connecting one digital and one analog?
I emailed ATI - but no response yet...
We'll see....