Forbes has revealed that the company will splash out an astonishing $1.5 billion to $1.8 billion (UK£1.1, AU$1.46) in a bid to ensure the new, radically different operating system is a smash hit with punters.The publication pointed out that Redmond spent only $200 million (UK£1.24, AU$1.95) on marketing Windows 95, so prepare for your TV screens, web-browsers and favourite publications to be awash with Windows 8 commercials.