The best way to work with this in Red is to first bring in the elements onto seperate tracks. If it is a layered PSD file, then you can use the command to seperate the file into layers.
Next, take all of these tracks and drop them into a 3d container. Now you will want to set the container to z-space for the renderer. Now start positioning the tracks in 3d space using the position parameters. You will definately want to offset some layers in z-position otherwise you will not be able feel the perspective. Now click on the container track and in the controls window go over to the camera tab. Now start playing with the camera and have fun.
This is something that can definately be done in Red.
Mark