okay. Well, first you would have to upload your pictures to an online host. Try
http://www.photobucket.comThen you would use a code like this.
CODE
<marquee behavior=LEFT>
<img src="HTTP://URL.OF/PIC.JPG">
<img src="HTTP://URL.OF/PIC.JPG">
<img src="HTTP://URL.OF/PIC.JPG">
</marquee>
you can change the "behavior" to left, right, up, down, bounce, etc. And you's replace the HTTP links with your own links to your pictures.