You can define stereotype icons using the file StereotypeIcons.etc in the config directory. An example of this file follows.
<?xml version="1.0"?>
<SUN:StereotypeIcons version="1.0" xmlns:SUN="www.sun.com">
<Version>1.0>/Version>
<Icons>
<Icon Stereotype="target" IsLargeIcon="0" Filename="stereotype_target.gif"/>
<Icon Stereotype="serverpage" IsLargeIcon="0" Filename="stereotype_serverpage.gif"/>
<Icon Stereotype="frameset" IsLargeIcon="0" Filename="stereotype_frameset.gif"/>
<Icon Stereotype="form" IsLargeIcon="0" Filename="stereotype_form.gif"/>
<Icon Stereotype="clientpage" IsLargeIcon="0" Filename="stereotype_clientpage.gif"/>
</Icons>
</SUN:StereotypeIcons>