To many, the changes and additions to Office 2007 are welcome options but to most, they’re annoyances. Top on the list of Office 2007 annoyances are the default save option. Office 2007 uses a newer set of file formats which are not compatible to older versions of the Office Suite (unless you download a compatibility pack or have a .docx to .doc converter or similar). To prevent experiencing this incompatibility issue, you can use the Save As option (just Save if it’s the first save for the document).

To prevent headaches you can set the default option to use the .doc extension instead of the .docx. Here’s how you do it.

1. Click the Office Button
   
2. Click Word Options at the bottom of the drop down menu
   
3. On the dialog box that will appear, click save on the left panel and change the option for save files in this format