Quite simply, if you want to animate Gifs, the program I use is Ulead Gif Animator. I don't recall the version, as it's on the other computer, but I know you can get the trial version off of Downloads.com, or check various warez sites to get the whole version. Maybe Kazaa has it, I haven't checked. However, it's pretty self-explanatory once you get the program.
As for showing your own artwork, first you must find a web space provider, be it geocities, or homestead, or what not; there are plenty out there. After which, you then upload your image and then place the URL in an HTML code; <img src="URL"> and check that "Use HTML in your message" box below. Not too difficult.
Or if you prefer, you can send something to me and I can upload it for you.