YOu need a site to host your photos. I like Photobucket. You can use flickr. Just do a search and find one you like. Once you upload the photo. click and copy the image code. Then past it in whatever thread you want. IT will just show up as text until you finish posting. then it will pop up. Make sense?
If you would like an additional outlet to share your photos, I've just started a new Facebook group called "photo enthusiasts" Just go on face book and put the name in the search box. You are welcome to join us! The more the merrier!