You will need the new trim cover. The old one will leave a gaping hole. You are missing a bunch of parts. The LVDS cable to the screen, the USB connector for the glove box and cable, and the blue connector for transferring some power cables to (behind CIC).
You need the PnP harness for the combox retrofit (unless you are planning on making your own :p)
See this
http://www.bimmerfest.com/forums/att...1&d=1289526612
You also need a different box that holds the CIC controller. See this thread
http://www.xoutpost.com/bmw-sav-foru...ch-patryk.html