IMac is running two primary displays

I am currently using Air Display for mac. My iPad is serving as the second display. However, when I turn on mirror display, it switches the screens of my iPad with my iMac, so that the computer shows the screen in the resolution which I'm assuming is that of my iPad. Its very pixellated and diffcult to read anything. I went to display under system preferences to fix the problem, but both blue screens have the white dock bar above them. It seems to be that both have been set as the primary display, but my iMac is showing my iPad's normal screen instead. How would I fix this? Also, why is there a dock bar above both of the diplays? They aren't side by side as I had seen in other places, but stacked on top of eachother.
Thanks for your help,
Karen

OK, well I would go with what Apple says in writing but if you want to take a trip to visit the Genius Bar that won't hurt.
Good luck, I'm 99% certain you will find I was correct but please let us know.
BTW when posting please click the Reply link in the post you are replying to, otherwise we can't tell who y our comunication is directed to.

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+Hi+
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OK, well I would go with what Apple says in writing but if you want to take a trip to visit the Genius Bar that won't hurt.
Good luck, I'm 99% certain you will find I was correct but please let us know.
BTW when posting please click the Reply link in the post you are replying to, otherwise we can't tell who y our comunication is directed to.

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If it has two DVI ports, just plug in the second display with an additional Dual-Link DVI cable -- the card can run both displays without issue.
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