Installation of vBulletin 5 (IT) and Download PDF system for USER

Hi, on wordpress base website we need to develop: 1) Forum with [login to view URL] 5.0 (access with password) 2) System that permit users with password to download PDF that Administration insert in the area Two type of users: 1) User that can access only to the forum 2) User that can access to the forum and to the download area - administrator shall have the possibility to: -- activate the accounts with the permission -- upload documents inside the area from control panel by Category and Data -- choose topic for the forum - Users shall have the possibility to: -- fill the registration for the forum + download area -- follow one topic of the forum ([login to view URL] should offer this) -NB: -- The System shall be in ITALIAN language.