well, if the server's got the GD Libraries installed in it you can mess around with a lot of images and what not, create images and modify images....if Larry and Jack have them, it's probably some easy thing like
PHP Code:
<?php
if ($imagesize > 80x80){
$gdimageresize 80x80;
$functionsavegdimageupdatedwithnewresolution;
}else{
poop
}
?>
that's really nothing, but it would probably be pretty easy, i really haven't messed with the gd functions of php...