Here you may find an explaination for this :
Beside if your image obey to a defined url pattern then you may need a servlet that have the seam context available
And it may be worth to study the souce code of the org.jboss.seam.servlet.SeamResourceServlet resouces servlet as well.
Thank you very much!!
I'll try now!
Perfect, I could upload images, but anyone knows how to DISPLAY the image in my app??