Hi
There is a mod to include a graphic try this address
http://www.asan.com/users/phoenix/upload/ it will work in both admin and add.cgi
however it is very tricky to get running, and as far as I know has not been fully developed to the modify.cgi, some people who have it installed have binned the modify link due to this
I have heard that someone is trying to develope the modify, but no news of it yet
Good Luck
DavyC