Can't seem to get DVI and external monitors to work (works on windows) ?

I'm going crazy here and I'm starting to think something is broken/wrong with the mbp I just purchased (I'm hoping it's just me and not the mbp)...
I have a BenQ FP91G+ LCD monitor that works fine using dvi with my windowsXP machine. When I try to get this monitor to work using DVI with my mbp all I can get is a black screen. The mbp sees the monitor fine since I can see it in the display settings. I've tried every different resolution available in the display options (with mirroring off and then again with mirroring on). No luck with dvi. However, if I use the vga cable with the dvi adapter things are fine.
I then tried two other lcd external monitors with the dvi input (one a Princeton model here at home, and a different model that I tried in a Best Buy - I think it was a sycmaster). The Princeton at home had the same BenQ problem - just a black screen no matter what I tried. The one in best buy, however, got a 'bit' further when I set its resolution to 800x600 - but even then it was bad since the display was just scrolling vertically.
I'm a bit stumped what is going on. I really should be able have this digital output work since all three of these monitors work fine with the dvi cable on windows.
Is there something seriously wrong with my mbp? What else should I try? Thanks for any help. (I've been searching these forums but haven't found anything yet to help.)

Thanks iVmichael, that makes me feel a little better at least. I'm guessing maybe the issues I'm having might be driver related? Seems odd that all 3 monitors I would have a problem with, but I guess it's possible. I can deal with the dvi-vga adapter usage, just don't want to something to be wrong with the hardware on the mbp.

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