There unfortunately is no registration option available with the new Battle.Net account system for some of our older games such as Warcraft 1 and 2 and the original Diablo. This may be an option that becomes available in the future, but at this point in time there are no plans to allow these games to be registered or downloaded from the website.
Technical Support is available
7 days a week!, 8am-8pm Pacific Time
I'm not available Friday/Saturday