Well, maybe not. Posting pics is easy. What you need to do first is choose your online host to keep your pics online. Thumbnails are directly loaded to Iboats and Iboats hosts the image in full size when called up from the thumb.
Some choices for hosting pics are Servimg.com, Picasaweb ( I use this exclusively as I can manage all my pictures with Picasa from Google on my computer, pick the ones I want to upload and then upload them. When I'm done uploading them, I can go directly to those new pictures and start using them here ) or even your own websites or FTP sites. Whichever way you choose to host them, then what you need to do is use the image tags and put the url that points to the picture itself, not the page it is on, in the image tags.
For example, the Image tags are
You paste your pictures address inbetween them, with no spaces between the tags and the url.
I should make a tutorial and post it on Iboats for quick reference when this question or problem arises. I could get it done in an evening.