Do you get rid of the background in a picture E.g the render so i can put it ontop of a background i make. i useally use lighten but that makes it seethrough so you can only just see the render.

some1 post a tut or give me some tips please.

Cut it out using your pen tool / or eraser tools.

realy?
once you cut it out then you can have a background underneath with out the Picture takeing it out, E.G the plain white background.

Take the pen tool and zoom-in to about 600% and start making a path around the person or thing you want to have cut out. When done join the end with the place you started. Then right-click in the area you made a path around and click "make selection". There should be a box come up and say feather whatevere blah blah blah click ok and then just use the move tool.

ok cheers mate. ill post here if im still being retarded.