I am no where near a pro, but I can tell you what I do. I use a few different photo sharing sites to host my pictures online. I mainly use Photobucket.com. It is free to sign up, and you just upload your pictures up there. They give you an account and a certain amount of space. When you upload a picture, it is assigned a web address. All you have to do is copy and paste that address for the picture into the forum post. On the top of the box where you type, there is an icon that looks like a photo. you click on that and paste the address inbetween the IMG commands. I am sure someone here can go into greater detail, but it is fairly easy to do.