Microsoft has launched a $6 million marketing campaign to popularise its forthcoming Office v. X suite of office productivity applications for Mac OS X, Reuters reports.

The product hits retail channels in November, and Microsoft predicts 750,000 sales by June 2002. Microsoft's own figures estimate 15 million Mac users worldwide. Reuters also reports that the Word for X test drive has been downloaded over 50,000 times in its first week of availability.

The suite has been redesigned to integrate Apple's Aqua user interface. Erik Ryan, product manager of Microsoft's Mac group, said: "It's the poster child for what an Mac OS X application should feel and look like."

It ships with Microsoft's Messenger 2.1 instant messaging software and the latest Windows Media Player. It contains Mac OS X versions of Word, PowerPoint, Entourage and Excel. The application will cost £430, and hosts many new and improved features.

Users who have purchased Office 2001 for Mac, Word + Entourage 2001 Special Edition, or any individual Office 2001 for Mac application (Word or Excel), can upgrade to Office 10 for Mac OS X for the special upgrade price of £149, available directly through Microsoft only. The standard upgrade price is £229. These prices are inclusive of VAT.