Datacolor User to User Support Group.

--- In datacolor_group@yahoogroups.com, "julia340@..." <julia340@...> wrote:
> Basically they say that the video card would need two LUTs in order to calibrate the two displays and this would need a modern high-end card. The only way to find which cards have two LUTs is by contacting the manufacturer because it's not obvious from looking at the card or (I think) its specs. As you said earlier in this thread.
> So I guess it will be simpler to stick with calibrating one display and using the other as a work area.

Try this link to an article about dual monitors on Win7:
http://www.laszlopusztai.net/2009/08/23/stop-losing-display-calibration-with-windows-7/

It is a bit long but worth the read. At the end there are specific instructions on how to get it to work.  When I was on Win XP, I had a system with one video card that had dual heads.  I was able to make it work using a Color Management application from Microsoft that let me assign profiles to each monitor.  When I moved to Win 7 I also changed my hardware and now have two video cards so no longer need to play games getting the profiles assigned.  I hope this helps.

Under the XP, single card, each monitor displayed per the profile assigned and all worked under Photoshop.

Rollin