They're in the Gallery. Click on the thumbnail picture to show the larger version. Underneath there are a number of icons. Click the one that looks like a blue square with a yellow pencil to edit your image.
Additionally, you might want to read the Forum Rules about the use of the Gallery:
BioRUST Forums - Announcements in Forum : Announcements
and this thread:
http://forums.biorust.com/biorust-sp...ge-upload.html (Maximum Image Upload)