You could use attachments, click Add Reply, then scroll down to a button that says Manage Attachments, and then upload your picture.

Or you could upload pictures at another site and link to them: go to Photobucket and upload some pictures from your computer. When you've uploaded a picture or two, just hoover your mouse over a picture and you should get all sorts of links for it, one of them is bbcode. it should look like this [IMG*]http://www.photobucket.com/linktoyourpictureandstuff.jph[/IMG*] so just copy that and paste it in this thread. hot stuff!

that code should be without the * signs btw, I just had to put them in so the code would show up in this post.