In a makeover effort of its uncool image, Microsoft decided to take the bull by the horns and invest $300 million into an ad campaign staring king of comedy Jerry Seinfeld, according to a report.

The software giant is providing few details on the campaign, but it appears that Mr. Seinfeld will receive $10 million for his participation, according to The Wall Street Journal. He is expected to appear next to former CEO Bill Gates and say something along the lines of “Windows, Not Walls.”

The campaign, to be aired September 4 nationwide, is the largest in the company’s history and amounts to three-quarter of its total advertising budget  in 2007.

According to the Journal, other comedians, including Will Ferrell and Chris Rock, should join in the campaign to liven-up the company’s image.

Microsoft's move appears to finally counter Apple's attacks in its “Mac vs. PC” ads, where a hipper, tech-savvy young Mac guy ridicules an older, plump, and boring PC geek.

Windows Vista, the software company’s latest operating system, has suffered many attacks in the press and was received coldly by the public when it was released last year.

Windows is the company’s biggest moneymaker, accounting for 28 percent of the company’s $60.4 billion in revenue last year.

Despite its image, Microsoft remains the distant leader in operating systems, but Windows Vista woes and market gains by Apple may have spurred the giant into action.

Yet it remains to be seen whether the 54-year-old Mr. Seinfeld, who can electrify audiences, will be able to give the software dinosaur a face-lift.