okay, im not too sure, but try this:
upload sa2b, go to options, create a new file at the bottom (each mem card can hold 2 files) and beat city escape with the chao key.
hatch both chao, then hit start then hit exit, then when it saves, turn off. Upload AR, type in one of the codes, like topaz, red, watermelon etc. one of the chao should be a different colour.
Your account is banned for the time bein' as you do not have the age of 13 yet and will have to provide us parental permission.
This is for your own safety.