I am looking for a way to have a third monitor on my 2008 iMac (iMac 7,2).
I have found some USB solutions that extend one output, lets say, the iMac miniDVI port, so the image will fit two monitors. I don't like this, for several reasons:
1) this solution requires both monitors to have the same resolution and the two monitors I want to use, have different resolutions and I don't want to reduce one to be like the other.
2) this solution will split one image to fit two monitors, so OSX will think it is one monitor and start doing annoying stuff as showing alert boxes on the middle of screen (half of the window on one monitor and half on the other) and stuff like that.
Said that, I ask you nice guys: there's some solution that can create a new "virtual" output that is seen by the OS as a third output? As this monitor I want to use is VGA, the solution have to work with this output up to 1280x1024 pixels.