Wondering if any of you have experience with this issue. I have three 24" dell E248WFP monitors on a Quadro NVS 440 that I want to rotate 90 degrees. When I select the rotate option the screen flickers but nothing happens and the setting goes back to normal mode. I have tried regular and digital cables, and tried switching out the monitor with an old 19" with no better results. I also updated the 440 driver today to the newest. This is a Vista Home machine. Any advice appreciated, thanks.