My cousins has a corsa with this problem can anyone help??

Cdr 2005 Vdo, 'disc Error'
Can any body help,
after buying the car private (year 2001 corsa sxi) I found that the cd player doesnt work, the radio works fine and all the controls on the facia and steering wheel but when I put a disc in it says 'DISC ERROR' on the screen. I have tried one of those laser disc cleaners but its still the same.
Any one got any ideas before I go and get ripped off in a shop.