When I am asked to create an image of an interior, I plan my shoot knowing I am going to be able to use Photoshop to complete the image. In the above image I used only two lights for this entire image. I did however use the lights over and over to create about 15 different photographs. Later in Photoshop, I sandwich all of the images and through the use of layer masks, I take the "lighting" from each image.
Check out the video to see how I create interior photographs with the planned use of Photoshop.