Elizabeth,
Great pics. It's nice to see that you have a little sitting area. I believe that it is also important to keep the computers away from the painting area to minimize distractions like forever checking and posting on forums like this - a problem I fight daily.
Steven: A longer explanation now that I can: my easel is right in front of those doors, and they are pretty shiny, but I don't really get any glare from them if you stand directly in front. Also, the light coming in was normal north daylight, but it looks in the photo like the sun was about 2 feet away from the window - another fact of photo distortion - light sources always appear brighter than they are in reality.
Lisa: I had typed a long message to you about hemispheres and how the sun tracks through the sky based on where you are, but could not post it, sorry. The gist of it has already been discussed, so I won't reiterate it. I might put your easel so that your nice even south light comes down on it at a high raking angle. You may need to block off the lower part of your window to make that work. Here they make blinds that go from the bottom to the top and they work really well.