Welcome to HBH! If you had an account on hellboundhacker.org you will need to reset your password using the Lost Password system before you will be able to login.
PHP Fusion
unzip the file you downloaded.
go into your "html" folder on your comp.
open up a FTP program. i use SmartFTP. Connect to your site.
upload all hte files/folders in the "html" directory, into your main diectory on your site.
visit your site and you'll see the "installation" menu pop up. Follow the on screen instructions and it will install for you!