Click on the Render Tab, and then click on the little doohicky marked in RED, and that will give you a seperate render window. Hope this was instructive, as I'm NOT used to doing tutorials, or explaining. Showing is my forte, but usually when I can actually talk to the person involved.
Yours truly,
David P. Hoadley
STOP PALESTINIAN CHILD
ABUSE!!!! ISLAMIC HATRED OF JEWS