Hi Joe . . .
Adding pictures to a post is pretty straightforward - that is after you get the pics out on the Internet. Our inliners site doesn't host pictures. So you need to get them out on your own webspace (which most monthly internet services provide) or out on picture hosting site. Once you've got them on the web it as simple is clicking the 'IMAGE' button when posting and giving the URL path to the site where your picture live.
Take my signature as an example. I simply click the IMAGE button, cut&paste in the http path (http://home.mindspring.com/~vwariff/sitebuildercontent/sitebuilderpictures/stock49ss.jpg)
and there it is: