Hi I have a 8800 but i don´t know whay my brother has done with it becouse now the blackberry has a password for locked keyboard, i don`t know the password and my brother also doesnt know it, What i can do to unlock the keyboard without the password?

another question, i want to unlock the blackberry to use with another carrier which solutions I have? I know about special codes from internet pages and the other is using a i-smart sim, does the i-smart work well?

Thanks