So, I just heard back from my buddy at ATI/AMD... There are two versions of this card. One version has two DVI connectors on it. That card was sold to both the PC and Mac folks, and then there was as 9600 G5 edition, which has one DVI connector and one ADC connector... So, depending on what version of the card this is, you will either need an adapter or you won't... isn't that clear as mud.
If the person selling the card tells you it has an ADC connector, then that's the G5 edition he is selling. For that you will need an adapter if you want to use it with a non-ADC monitor.
Wayne