Quote - I agree, I think you just have too much light.

Based on what you described (with a few guesses on my part) I set up

25% white IBL
55% white main light (front, slightly above and right)
25% white fill light (front, level, from right)
25% white fill light (front, level, from left)
25% white back light (level, from left and behind)

Overall light intensity with such a setup will run from about 50% in shadows, to 125%. That's a lot of light, and very even. It will produce an over-exposed look with little contrast.

Here's my render with that setup.

so you used 1 main light, 2 fill lights and one back light with shadows. were all shadows raytraced? and what was the blur.i like the soft shadows. with some tweaking those settings could be used for light coming from the window.