Are you running an older version of Office and wondering how your organization will fare with Windows SharePoint Services v3 or Microsoft Office SharePoint Server 2007? There are a lot of features that come with Microsoft Office 2007, but what is "business critical" vs. "nice to have" when it comes to the "ribbon" or the SharePoint metadata bar at the top of your Word 2007 documents?
And what about basic functionality, like open document from a document library, saving them back to SharePoint and check-in/check-out?
Thankfully, Microsoft has written a whitepaper which describes the features and functionality in each Office platform to help set your expectations (or more importantly, your management's expectations).