Calibrating external monitor from macbook pro

Hello,
I just bought a new Samsung t240 24" display for a late 08 macbook pro.
Its connected from mini display to dvi.
However the colors look really different from what they look on my macbook pro display.
The samsung looks very sharp and bright, however there is a slight blueish cast, in contrast from the mbp display, which looks rather warmer.
I already tried calibrating with the built in mac osx calibration, but it gives me the same result.
Maybe somebody here has a calibrated profile for the t240 or a similar one I can try?
Thanks and really appreciate any help.

I know this is an old thread, but I just wanted to let people know there is another way of solving this problem without resorting to buying a DVI adapter:
I've posted a solution here to a similar problem, it has worked for me and for others.
http://discussions.apple.com/message/21415276#21415276

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