This patch was initially only for office on windows,  however some MAC users of office may have noticed a patch being pushed down to them as well.   Microsoft has revised the bulletin and detection logic

MS07-036 Vulnerabilities in Microsoft Excel Could Allow Remote Code Execution (936542)

" Summary: The bulletin was updated to include Microsoft Office 2004 for Mac and to indicate that the File Manifest information has been updated for Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007.  The significance here is around the fact that when the bulletin was released there was no mention of Mac being affected despite the fact that bits were published to address the issue for them."

Mark - Shearwater