I have two ATI Radeon HD 4350 video cards with a monitor connected to one via DVI and a Wacom tablet on the other via DVI. How can I set it up for both displays to be the primary display?

You can't make both primary. You can make them both display the same thing.

wanderer, How do you do that?

Each video card is different as is the display its connected to. You should be able to get both to display the same thing. Usually this is by default. You don't want to span monitors, extend desktop or anything like that.

An alternative would be to get a 'Y" splitter cable and hook them both up to the same output. http://www.google.com/search?hl=en&...

I am sorry. I misread your post. I thought you had a dual headed video card. You have TWO video cards. Should be no problem to set each as primary. What exactly is the issue you are having doing so?

Wanderer, Ya two cards. I am realizing I should of went with Nvidia instead of ATI. Windows wont let you choose two primary monitors. My goal is to have both monitors mirrored except that one is set to a slight higher resolution.