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Office 2007 (Windows) and Office 2008 (Mac). Until the summer of 2012, students and faculty could obtain and install this software as a part of being at Knox. The license agreement for this has since expired, however. If users ask about this, direct them to the Varsity Buys deal for 2010/2011.
Office 2010 and 2011
Office 2010 (For Windows) and Office 2011 (For Mac). This is the most recent version of Microsoft Office released. Most of the interface is the same as 2007/2008 and most common problems can be resolved the same way as they were in Office 2007/2008 and even Office 2003/2004. It's a good idea to know what version you're dealing with.