Do you have problems opening up Microsoft Office 2007 files because you are still running Office 2003?  I am constantly getting .DOCX files from people using 2007.  I (and several million other Office users) and sticking with Office 2003.  Instead of asking the Office 2007 users to re-save their files in the more broadly compatible format for Office 97 – 2003, I use Microsoft’s Office Compatibility Pack to convert the files to the 2003 format.

Click Below to download the Conversion Utility from Microsoft.
Download details: Microsoft Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats