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

When using IMG code at photobucket, photobucket adds the IMG tags to the link for you. No need to enter them again as the link will not work.