No, they wouldn't sell them in stores if they were.
you have to order off the gameshark website many gaming stores sell them as well
It is very unlikely for a GameShark being illegal because they sell it at a lot of different stores.And BTW why would you do that to a FRIEND?
Well, umm I've never heard of a gameshark shop... but I got mine at Game Stop. They sell them at Walmart sometimes too.
No where, believe me I've tried to find one myself and there was none except for a N64 gameshark I saw and that was it. Try calling MadCatz for a special order because they still sell gamesharks.
Noto your first question, yes to your second.
no you must have a gameshark to use gameshark code because there is no other way to enter them into the console but if you get a gameshark then many codes come downloaded on them so you don't have to type them in GET GAMESHARK THEY ARE AWSOME
No.
put your game in the gameshark, then your gameshark in your SP, then turn your gameshark on. then turn your gameboy on.
on the gameshark
What is gameshark
sadly there is no gameshark for ps3