AVG certifies my outgoing mails, and appends this to the end of each message.

Code:
<FONT face=3DVerdana color=3D#000080 size=3D2><BR>---<BR>Outgoing =
mail is=20
certified Virus Free.<BR>Checked by AVG anti-virus system (<A=20
href=3D"http://www.grisoft.com">http://www.grisoft.com</A>).<BR>Version: =
6.0.592 /=20
Virus Database: 375 - Release Date: 2/18/2004</FONT></DIV></BODY></HTML>
So the result is:


---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.592 / Virus Database: 375 - Release Date: 2/18/2004
I'd like to be able to modify the font and size settings for this. Where is this information stored? How can I change it?