in april of 2011, the winklevoss twins lost their appeal of the lawsuit against zuckerberg, and their08 settlement still stands. [ticking] [bluesy guitar music] ♪ coming up, we meet another silicon valley billionaire: microsoft's paul allen. >> you built this building. >> it's amazing to think, back then, nobody had personal computers. i mean, there were computers in universities and research labs and in corporations, but nobody had personal computers. [keys clacking] >> the cofounder, when 60 minutes on cnbc returns. [ticking] ♪ stream, stream, stream... ♪ strea-ea-ea-ea-eam ♪ ...stream, stream, stream... ♪ whenever i want you, all i have to do is... ♪ [ female announcer ] introducing xfinity streampix. stream your favorite movies and full seasons of shows instantly on any screen. find out more online. dave, i've downloaded a virus. yeah. ♪ dave, where are we on the new laptop? it's so slow! i'm calling dave. [ telephone rings ] [ male announcer ] in a small business, technology is all you. that's why you've got us. at the staples pc savings event, for a limited time get up to $200 o