This post decribes how to use your Mac with SharePoint Online and Office Live Meeting which are included in BPOS. Mac and SharePoint Online. When using Mac to edit and check-in and check-out documents from SharePoint Online, its recommend that you use Document Connection that comes with SP2 version of Microsoft Online 2008 for Mac. These actions aren't supported when using Safari to access SharePoint Online. Important: Be sure to install the SP2 version and 12.2.3 update for Microsoft Office 2008 for Mac.
Mac and Live Meeting: Microsoft Office Live Meeting provides a web access client that you can use on your Mac. To launch Live Meeting Web Access, click Web Conferencing on the Mac Sign In application. To learn more about using the Live Meeting Web Access client, see Using Live Meeting Web Access.