OK, one question that often comes up - "How do I add pictures?"
Here's what you do.
Create a new topic (or reply to an existing one).
The message window comes up where you enter your text.
Directly underneath the white text box (and above the <Post> and <Preview> buttons) there is a link called <+ Additional Options...>.
Click on this, and a panel unfolds for attachments.
Where it says "Attach:" click on the <Browse...> button and the File Upload screen shows.
Point to the picture on your computer and click on <Open>.
The picture is now listed in the "Attach:" textbox.
To add more pictures, click on the <More attachments> link, and repeat the process as many times as needed.
Once you have all the photos you want, click on <Post> to add your comment (and your photos) to the discussion.

Hope that helps...
Just remember: there is a limit of about 10 pictures for each message.
John.