rendering in multiple windows ...HELP

I want to create a solar sistem in full screen, and when the user selects a planet i want that in a small window to show only that planet spining and maybe some info text about it. How can i do that?

If is somehow posible to render in bouth windows … don’t i need 2 renderScene proedures(for eah window) ???
Or is it posible to have a big window, and when u select something in a smal window to see only the object u selected (still moving)
Help Me pls!