Every other vertical line of pixels discolored

[krs2714]

I have a Dell XPS m1530 with NVIDIA GeForce 8600M GT
After having it for about a week, one day I opened it up and the screen quality looked poor. I looked closer and found that every other vertical line of pixels is discolored!
I've tried messing with all the video settings, ex. resolution, colors, refresh rate etc.
I think the problem is more with the actual screen and not the video card.
Any suggestions/tips before I call Dell?
(5 hour phone call to India to tell me I have a problem)