Most the answers you seek are in the J2ME MID Profile Specification available from Sun (
http://java.sun.com/j2me/docs/)
However, I will point out that what you described can be easily handled by most microbrowsers built into most J2ME phones. Put a picture on a server and just use an http request. For example, open this link on your phone:
http://apgap.com/pub/William.jpg Your browser should display the picture. If it's too large for your display (that example shouldn't be) you'd be able to pan up/down/left/right around the image. This is just a capability built-in to most browsers. There's nothing special about the image or the server.
William Frantz
http://SprintDevelopers.com