There are two ways to get pictures to display. The first way is to upload the pictures using the following procedure.
1. Start a new topic2. Click on "Additional Options".
3. Click "browse" -or- to upload multiple pictures click "(more attachments)".
4. Select the picture(s) that you want to upload and click "open".
You're done! (Well, you're done after you actually submit the post)
The other way is to link to a picture on a web page by using the insert image button.

Hopefully this helps. Now post up those pics!