for posting pictures, you first need to have it on the web, like your own web page, or a free web host like imageshack. When that's done, click on the Img button at the top. in between the brackets that appear, put the complete address for your picture. It will look something like this:
[img*]http://www.yourpicture.com[/img*]
Note: omit the *, I put them there so that it won't look for an image on a page that does not exist
without an image it will be difficult for people to help you :P
Remember the future?, That'd today, as you imagined it yesterday.