You need to buy or make removal tools. Just cut a metal coathanger into 2 pieces about 9 inches long and bend each piece into a "U" shape. You insert these into the holes at the sides of the radio and gently draw the radio out of the dash. There are no screws. Hope this is clear enough, it's easier to do than to describe. Failing that just nip into a local garage and ask them (they'll probably do it free if you smile nicely)
H, January 2010