This is from an earlier post I made to Bob Flood. Please note the bold it has updated information.
If you want to use your NTSC (or PAL, please substitute Pal for NTSC in this post) monitor as an extended desktop, you download and install the kona control panel and click on the control tab. Set the default Kona output to Macintosh desktop. Then, click on the format tab and set your primary video format to 525i29.97 (or 625,etc). Click on the analog video out tab and make sure that the primary radio button is checked. Also, make sure that the analog component output of your Kona is connected the the analog input of your NTSC monitor.
Now go to the apple display preferences and open them. There’s a tick box that shows “Show displays in menu bar”, make sure that is on. Now, there’s a little icon in the main OSX menu bar that looks like an apple display. It should be up on the right side next to the clock. Click it and you should see list of displays and their corresponding resolutions, scroll down to the one that says “display” and choose 720×486 or 720×576. Now you should see a picture on your NTSC/PAL monitor. If all you have is HD resolutions available, keep scrolling down in the apple display preferences to a menu called “number of recent items” and check the number ten. Now, you should have a list of NTSC/PAL and some HD resolutions. If you want to preview your photoshop you must drag the window over to your NTSC/PAL monitor. Make sure you hit the arrangement tab in the display system preferences, as your extended desktop will now be situated in the middle of your two computer monitors (if in fact you have two computer monitors). You can then drag your extended desktop to whatever side you need it to be on.
Jeremy
———–
G5 Dual 2Ghz <> 4GB RAM <> FCP 5.04 <> Kona 2
ATTO 42XS <> Huge Systems 4105 Fibre
OS 10.4.2 <> QT 7.0.3