Radio Code for 97'Renault Clio?

Hi,lost the radio manual for wife's Clio and now need code for radio after replacing battery,it is a Renault-Pioneer factory fitted radio/cd player the only number I can find on the radio is on the bar code 7700 845 459 ,I also added my Post code and and security details when we got the car(about 3 years ago) I remember them I think!Any help PLEASE She's driving me mad.