hi all, can any one help me, i took the origional radio/casette out of my picasso, and put a factory radio/c.d unit in, it will turn on radio & c.d work fine, but it has a bleep bleep every few seconds, i've had a look and these are not coded( well ment to be) but i have a code, but i don't know how to enter it, if any1 can help me i would be very greatfull 