Problems connecting Macbook to Infocus X2 Projector

I'm trying to set up my Macbook to project through my Infocus X2 projector using an Infocus Liteshow wireless card.
I can get the screen to project but the visual comes up looking kind of like a 'negative' image. I've fiddled with my display settings but can't seem to fix it.
I don't think the problem is with the projector itself because it projects fine from my other DVD player.
Any ideas? Thanks.

Try turning on the White on Black option in the Seeing section of the Universal Access pane of System Preferences when you need to present; this will invert the color of all displays currently connected to the machine.
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http://discussions.apple.com/click.jspa?searchID=-1&messageID=10830387
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