Brad,
A classmate emailed me his post for the Message Forum. I entered it and now my picture appears on the posting. How can I delete my picture and add his?

1) Copy post to your clipboard
2) Delete post
3) Log in as that Classmate
4) Paste post from your clipboard

How do I log in under the classmates name if I can't see his password? I copy and paste it in his login page but it won't accept it.

You'd need to ask him for his password if he can't log in and do this himself. Each Classmate has a unique forum account, which is going to pull the Classmate's name, photo avatar, etc., so if you're going to post something on behalf of a Classmate and wnat that post to appear to come from the Classmate, your only option is to obtain the Clssmate's password, log in as the Classmate, and make the post.