If you are a member of the Crossle transcription group, go the login page to log in and then come back here. If you have any questions or would like a login to join this group please contact Yermo.
If you see the Post Article link, you can post articles to this list. These can include images. What I would suggest is that you place your image in these articles and then do your transcriptions as comments. This way you won't have to worry about two people trying to edit the same thing at the same time.
When you go to post an article you'll have a WYSIWYG editor that will also allow you to upload pictures. Just click on the picture icon next to the link icon on the WYSIWYG editor toolbar.