Microsoft on Thursday kicked off an advertising campaign for the new Windows 7 operating system with a spot on the CW's "Vampire Diaries".

The 30 second commercial features a young girl using her father's Windows 7-equipped PC.

"I found these happy words all over my dad's computer; 7,7,7,7," she says. The girl goes on to launch a slide show featuring a cute menagerie comprising bunnies, cats, and unicorns.

The ad concludes with the girl saying, "I'm a PC, and more happy is coming."

The spot is noteworthy in that it eschews the use of celebrities to promote Microsoft's new OS. The company previously tapped comedian Jerry Seinfeld for a campaign to promote Windows, but the series was widely panned for being too abstract and failing to connect viewers with Microsoft technology.

Windows 7 has already been released to some business customers, and is slated to go on sale to consumers starting Oct. 22nd.

Full story: InformationWeek