If you dont now how to place pictures. Here is the explanation
First you need a place to host the pictures. Like..
http://www.mijnalbum.nl/ http://photobucket.com/upload your pictures to one of the sites. there are many of them.
Than go to the forum and click on the Img button
Than you see this
place the link of the picture between the [img]here[/img] like this
press submit