Mx vs Atv Alive

I realize this game is old but I bought this years ago, haven't played in at least 5 years and decided I wanted to get on and mess around for a little bit today and I don't remember my playstation account or anything and so I don't have access to the Stewart Compound which was the only cool part of the game. I don't have the code or whatever it took back in the day to get the track anymore, am I screwed or is there anyway to get the compound back? It's for a ps3

Thanks guys