Word, change the Style Set option.

To do this, follow these steps:

	Click the Home tab.
	Click Change Styles in the Styles group, point to Style Set, and then click the style set that you want to use. To change the default formatting of your document, such as the line spacing and paragraph spacing, to the default formatting that is used in earlier versions of Word, click Word 2003.
	To set the style set as the default style set in Word 2007, click Change Styles in the Styles group, and then click Set as Default   To change the font default: http://support.microsoft.com/kb/291291