Again, apologies for ressurecting an old thread, but I have a similar problem with Premiere Pro. I have tried on several different computers of different brands, with different combinations of OS’s, GFX cards and monitors. The common factor is Premiere Pro CS3.
What happens is that what you see displayed via PP is considerably darker than when you view the same file via a different program or device.
I am currently working on a project which relies heavily on the use of deep shadows to create the feel we need. We edited in PP CS3 and it looked ok, but when we burnt to DVD it was a lot brighter than it appeared before and suddenly all the details that were meant to be hidden in shadows appeared. The same thing happened when viewed in VLC player.
I finally decided to run the same captured DV AVI in PP CS3 and VLC player side by side on my pc. The screen-grab speaks for itself…

On the left is the output from VLC and on the right is the output from PP CS3.
That’s not a monitor problem – it’s a problem with Premiere Pro.
Question is, how do I fix it, because at the moment I can’t correct my output without a lot of guesswork or trial and error.