Before we get out the pitchforks, Google is still supporting the current Microsoft formats (.docx, .xlxs, .pptx). If you're still running Office 2003 or older,

Before we get out the pitchforks, Google is still supporting the current Microsoft formats (.docx, .xlxs, .pptx). If you're still running Office 2003 or older, you can install a compatibility pack from Microsoft to support the current file formats. (http://support.microsoft.com/kb/924074 http://support.microsoft.com/kb/924074)