Hello, my new HP ZR30w won't work together with my Mac Pro 1,1 and his Nvidia GeForce 7300 GT. System is 10.6.8. I tried different options with the DVI-Ports on the back, changed the DualLink-DVI cable and read the Apple Discoussions. Nothing is working, the screen is still black. It's not off, its shining black. What can i do? Is there a solution for or do i have to buy an other graphic card? Thanks!