I'll post a better tutorial later when I'm not so tired.
First, the forum doesn't allow attatchments for bandwidth reasons, but you can still post pictures. You just need a photobucket account.http://photobucket.com/
It's free and lets you make galleries and search for photos to add to your own galleries.
When you've got a picture in your gallery, mouse over it and it will have some code options below it you can simply copy and paste into your posts. It will be the code with the "img" tags around it.
Poof like magic your image will appear and you will have a warm glow of accomplishment that borders on the obscene. I know your excited.