"I'm a PC" and "I'm a Mac" commercials aside, the popular view of Apple and Microsoft as archenemies overlooks one of the software giant's significant profit centers -- Microsoft Office for the Mac. Since Apple's release of an iPhone software development kit (SDK) on March 6, Redmond's Mac developers have had the iPhone and iPod Touch on their workbenches and possible applications on their minds.

The Inquirer reports that both Microsoft's Specialized Devices and Applications Group, home of the Mac Business Group, and the voice recognition unit TellMe that Microsoft acquired a year ago are exploring the SDK.

Tom Gibbons, corporate vice president of the Specialized squad, told Fortune, "To the extent that Mac Office customers have functionality that they need in [the iPhone] environment, we're actually in the process of trying to understand that now."

Click here for the Fortune story on CNNMoney.com.