Hi,
First get yourself a wire coathanger, using a strong pair of pliers cut two lengths of wire about 7 to 8" long. Bend them into a U shape sized so that the "prongs" fit into the two holes at either end of the faceplate. Push the U shaped tools in as far as they will go; 2 to 3" and then pull the face plate towards you (just hook your fingers into the cassette hole). You will find the whole head unit should slide out, remember to pull the radio fuse first though ok.
Cheers
Ken Chapman
April 2007