Hello, I am will be (maybe) a new user of BFD2 if I can get the install working... I find that maybe my recent purchase of used full install 5 disc of legacy BFD2 2.1 w/ SN may not be usable because of authorization issue(s). Is this true? Seller claims has not used it in years and that computer is long gone. What are the details of being able to install used legacy BFD2? Is BFD2 legacy still bound to the authorization rules? I am confused. Did I just throw my $ away? Please help, my brother is going to have my head if I don't figure this out. Leon.