First Car, Need Help!

[the_blitz]

ok heres the deal, finally saved up and bought my first car.......which obviously due to the area of the forums im posting in is a falcon futura AU 1998 model


well when i first received the car it was in pretty good condition for teh rpice i got it at!, but the battery was a dud and needed to be replaced...

anyways a mate did it for me, but foolishly forgot to keep the power supply connected, now the audio system doesnt work and it has the word CODE displayed, now how can i get around this pest!

driving with no tunes is quite boring, there is only so much i can tlak to myself about hhaha

thanks in advanced CHRIS!