<OWAUICustomizations>
    <SmallIconMappings>
        <!--You can register your own icons for custom 
            message classes here. 
            The Default IconFlag="Default".
            The Default PrefixMatch="false".
            Attributes should be in the order of: 
                ItemClass, 
                SmallIcon, 
                IconFlag, 
                PrefixMatch
        -->
  <Mapping 
            ItemClass="IPM.CustomClass" 
            SmallIcon="CustomClass.gif" 
            IconFlag="CustomClassRead"/>
    </SmallIconMappings>
    <MainNavigationBarExtensions>
        <!--You can register your own entries to appear in the
            Outlook Web Access navigation pane here.
        -->
        <MainNavigationBarEntry 
            LargeIcon="LargeIcon.gif" 
            SmallIcon="SmallIcon.gif" 
            URL="http://server/application.aspx">
            <string language="en-us" text="My Application"/>
        </MainNavigationBarEntry>
    </MainNavigationBarExtensions>
    <NewItemMenuEntries>
        <!--You can register your own entries to appear in the
            Outlook Web Access New item drop-down menu here,
        -->
        <NewItemMenuEntry 
            ItemType="IPM.CustomClass" 
            icon="Sample.gif">
            <string language="en-us" text="New custom item"/>
        </NewItemMenuEntry>
    </NewItemMenuEntries>
</OWAUICustomizations>