ah, well you hadnt gone that far, you could start your game again, and not use cheats...
im sorry i dont have a gameshark so i cant help you, but make sure your typing in the code 100%perfectly...
Join this site...http://s14.invisionfree.com/ChaoticRoleplayRealm/index.php?
and this one...http://gameknot.com/?rfr=diezombie...when you sign up the second one, where it says referals by, type in diezombie