Microsoft is less than a month away from introducing an Internet-based operating system, CEO Steve Ballmer told a recent conference of software developers in London. "We'll need a new operating system," Ballmer said. "Just as we have an operating system for the PC, for the phone and for the server, we need a new operating system that runs in the Internet."Ballmer did not know exactly how the product would be branded, but said it would be called "Windows something". For the time being, he continued, "I'll call it Windows Cloud.