"Read" message icon
 

I'm looking into implementing a custom message form. To avoid any confusion,
I'd like to change the icon for the form from the default "unread" message
icon to the "read" message icon. The problem is that I can't find the icon
anywhere. I even downloaded a file that contains all of the gif's, jpg's,
bmp's, and ico's stored in the exe's and dll's of Office 2003 and I couldn't
find it. Does anyone know where it is?