Help - Want to put image as an background for Window


Hello, everyone i want help on the following topic.
I developed one GUI using interface builder and project builder in XCODE 2.0 using carbon apis.Now I want to put an image i.e. either .jpg or .bmp as background for window (that is as background for GUI).

Also if pls tell me how can change my window color i.e other than black and white , means either blue or other color or any other color.

can any one pls help me. how can i do that ?

Pls send me reply on