Forgot Samsung unlock code? How

Samsung Master Reset:
CAUTION: A "master reset" changes the phone settings back to default. This process will erase all contacts, downloaded settings, and downloaded applications (ringtones, wallpapers, graphics, etc). This process cannot be undone. 

Enter *2767*3855# from the standby screen. (You may need to remove the SIM before it will allow you to type the code in)