image ready question

im frustrated.

I finally got photoshop (got rid of photoshop elements because no one even has that, and none of the photoshop tuts translate to it....). i also have image ready so I can finally make animated icons, but how do you make new slides in the animation bar, i mean every time i click on "new slide" it makes a new slide of the SAME image, but I want it to clip to another image, not the same one. How do i insert this new image into the animation, also how do you turn layers on and off for animating text and making blinking icons...