Mini DVi to VGA colour issues

Hi,
I recently purchased a projector to connect to my macbook. My intension was to use a mini-dvi to vga cable to do this, however when i connected everything up the projected image had a green tint. I must also state that i have connected a TV to the same port with a mini-dvi to s-video adaptor with no problems with the colour.
My first thought was that the cable was the problem, so i borrowed my friends macbook to see if they had the same problem. There where no issues, so if figured it was either a software or hardware issue.
My next step was to boot off the start up disk and plug the projector in, same issue - green tint.
So i have concluded that it is a hardware issue. I know that the mini-dvi port is connected directly to the logic board, if i want to get this fixed will i have to replace the whole logic board or is there another way.
All your help comes much appreciated.
Thanks in advance
Bob

Hi DoDolom,
First, welcome to Macintosh!
Secondly, it sounds to me like what's happened is that OS X has extended your desktop onto a second monitor. Plug in an external mouse and keyboard and then close the MacBook's lid. It will go to sleep. Use the external mouse/keyboard to wake it up and you should be running on just the external display.

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Hey guys,
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Hi DoDolom,
First, welcome to Macintosh!
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Message was edited by: BlakeTron
Message was edited by: BlakeTron

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Hi,
I've searched in the discussions forae to see if this issue has happened before, but it doesn't seem so.
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But I had just figured out a solution today. I guessed that the resolution wasn't holding when I switched monitors so I went and picked up a mini-DisplayPort adapter to run the monitor along side the projector at the same. This way I could see what was going on.
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Thanks once again!!!
Message was edited by: BakaBaka

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Oh, it won't let me edit, so here's an added note:
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EDIT
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