Ok, I JUST got a gameshark today and I wanted to use it for my Pokemon ruby game so I got all the cheat codes and stuff on there but then every time I try to make it work a little pop up comes up and says I don't have the master code! I almost went on a rampage trying to get this thing to work and then THIS happens! What am I supposed to do? Can somebody tell me this step by step? Help me asap!