The best way to post pictures is to use a free photo storage website like http://photobucket.com/ or http://www.postimage.org/ . Both of those sites are free and can serve as a place to store hundreds or thousands of photos. Once you have your photo’s on the storage website, you will see a bunch of URL’s and codes listed with each photo. With photobucket, you would select the “IMG CODE”, or if you use postimage, you would select the “Hotlink for forums (1)” code. Once you’ve selected the proper code, you just have to paste that code in your post on the forum. Paste the code wherever you want the photo to appear within your post. It may take a few times and a few “do-over’s” to get the hang of it, but it’s not too difficult. I hope I’ve explained it in a way you can understand.
Oh…if you’re not into posting a lot of photos, postimage is great in the way it allows you to use their site without an account. You can upload a picture to postimage and then paste it directly on your forum post. And, I have found it to be much faster than photobucket (although I think most of the folks are using photobucket).