I have recently upgraded from CS3.
I am a multiple monitor worker.
In the past, when I opened images they would open to my center monitor; allowing me to begin work instantly.
Now, they open to my right monitor and I have to drag every image to the center....how do reset their placement to open on the center monitor, every time.
Give this a try: Once you have positioned all the elements to your liking, go to Window > Workspace > New Workspace and name it. If, for some reason, on the next opening of Photoshop your layout is not as you had set it previously, go to Window > Workspace and choose your special layout.