deleting Message board picture?

Ok so heres my problem, from my SD card i saved a a few pictures on my wii message board but the thing is that i dont know how to delete them . I tried going onto options - data management - and then  SD card but there not there....

Isn't there a little trash can in the top left corner of the picture in the message board?  If you click that I think you can delete it.

To delete them from the message board just click on the trash can in the corner just like deleting a message.