Mac Air using projector problem

MacBook air mid 2012 11 inch. Trying to use with older InFocus projector, which works fine with my iBook. Using new mini display-VGA cable. Projector searches for computer and finds it, but displays galaxy picture that is unfamiliar. When open Display in System Preferences, the display window shows with the galaxy behind it. Clicking on different options in Display does no good. Any thoughts would be greatly appreciated.

Hey Stonely,
Thanks for the question. It sounds like your display setup is configured to extend your desktop. If you would rather mirror your desktop (what you see on the projector is the same as what is on your computer), check the “Mirror Displays” option in Display Settings > Arrangement:
OS X: How to use multiple displays with your Mac in Mountain Lion and earlier
http://support.apple.com/kb/ht5019
Video mirroring
Mirroring displays the same image on each display.
Make sure your additional display is properly connected and powered on.
From the Apple () menu, choose System Preferences.
From the View menu, choose Displays.
Click the Arrangement tab.
Enable (check) "Mirror Displays" in the bottom-left corner.
In the example below. the blue boxes represent each display that is connected. The white bar at the top of both boxes represents your menu bar and is shown on both displays when they are showing the same information.
Thanks,
Matt M.

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