Yes its easy, you of course need some web hosting which im guessing you already have... then you can either get a nulled version or paid version depending how you want to play the game.

Which ever way you decide, you will need to download a copy and upload the files onto your server/webhosting

then go to www.mydomain.com/forums/install.php ... this will then start the install process, you will need to create a database such as mysql

Copy the details of the database (username,password etc) into the install script (which should be on your screen)

press install / next step

Thats how it used to be, its been along time since i installed an ip board.