Assuming that you are running Microsoft Outlook 2003, see Tools Options
Mail Format tab Fonts button.

Note: Mileage may vary if you are using stationery

"franco" wrote in message
...
I have been fighting with the new (and rather confusing) styles feature and
have failed to manage a simple task: To make the body text size 10 point
my
default font for emails. How do I achieve this?