[calorie]

To get a feel for avatars, look at the following code chunks in the profile.php file:

if ($_REQUEST['do'] == 'editavatar')
{
	// blah blah
}

if ($_POST['do'] == 'updateavatar')
{
	// blah blah
}

Maybe consider pulling the avatar and using CSS to resize the avatar into a thumb:

<img src="whatever" style="width: 25px;" alt="" border="0" />