LCD monitor is grainy & red. please help!!

Hello!
I have a Macbook from Christmas '06. I recently upgraded to Snow Leopard.... I used to hook my computer up to my TV, but after upgrading it has grainy red lines in the dark areas of the screen. I just bought a new LCD/LED lit monitor and am having the same issue, if not worse. Every single resolution I've tried has these grainy red dots - sometimes lines on the lower res - and I cannot get rid of them, even after calibrating the settings. I even tried downloading switchResX with no luck.
Please, someone help me. I am sorry I am not well versed in tech terms - so the more basic instructions, the better. Thank you so much for reading!

You want to press the SHIFT, CONTROL and OPTION (also ALT) keys plus the POWER button. The CONTROL and OPTION (alt) keys are next to each other.
Ciao.
It is also the Left SHIFT key.
Message was edited by: OGELTHORPE

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