After logging in, click on Look and Feel
In the Header section, ensure that Input your own Header HTML
is selected in the drop-down menu, and add an appropriate <link> tag at
the very beginning of the entry box.
The <link> tag will look similar to this:
<link rel="pavatar" href="http://yourhost.com/path-to/pavatar.png" />
(The URL in bold must be customized. You will need to insert your Pavatar URL.)
Save Changes!Copyright (c) 2006 Kurt McKee.
Permission is granted to copy, distribute and/or modify this
document under the terms of the GNU Free Documentation License,
Version 1.2 or any later version published by the Free Software
Foundation; with no Invariant Sections, no Front-Cover Texts, and
no Back-Cover Texts. A copy of the license is available at
http://www.gnu.org/copyleft/fdl.html.