For lighting, the environment set to daylight gives pretty amazing results - or leave it as texture environment, and plug in the texturemap you are using for the skydome (note: I think the texture will be flipped in the X axis and offset a little, but shouldn't matter).

As a rule, for outdoor I like sunlight or an IBL texture.  For indoor, emitters looks good.

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Creator of OctaneRender for Poser
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