I am using the downgraded to Windows XP version of Vista and Office 2007. Also Small Business Server 2003 with Exchange. I am trying to change the default font in Outlook by going here: Tools/ Options/ Mail Format/ Stationary/ Personal Stationary and changing the settings under new mail and replying. When I close Outlook, it reverts back to what it was before I changed it. I noticed in the font options window that the default button is grayed out. Thanks for your help!