I currently have 1 legal copy each of the original game and the expansion pack installed on one computer.
I eventually want to install Diablo II and the LoD expansion pack on my 2 computers so I can safely transfer stuff between my expansion characters and give my guys an exp boost when playing private games.
Do I need 2 copies (legally purchased of course) of Lord of Destruction AND 2 copies of Diablo II? I seem to recall a rumour that you would only need 2 copies of the LoD expansion and not 2 copies of the original game and that this was ok with Blizzards licence but I could be mistaken.