vBulletin is a powerful, scalable and fully customizable forums
package for your web site. It has been written using the Web's
quickest-growing scripting language; PHP, and is complimented
with a highly efficient and ultra fast back-end database engine
built using MySQL.

Before unrar the file run the releasechecker.php, check the validity
of the release, if it is a valid release unrar and rename,
include/config.php.new to include/config.php,
edit the variables, upload to your host, then run install/install.php
and follow instructions. There is also .sfv file to check the validity.

This null is 100% clean, as iNSANE null still has some callbacks
from Jelsoft. Another null that is coming from ATD still has some
callbacks. vBTEAMs null is 100% clean. Enjoy it!