Having trouble with my PSN account...

well, long story short: a couple years back my brother made me an account, but since i didnt have an email, he typed in a bunch of random letters, and a random password. Now that im older, i want to enter my email (that i now have), have a new password, and maybe a new name. so yeah, kinda a whole new thing, but on my existing user on my ps3. if i make a new PSN account on my guest user, and then sigh in to my normal user, will i A. still have all my game data, and B. be able to type in the new account data that i made?