, for each new frame or moving obejct.Now simply open the 'Animation' pane under the 'Window' menu, and you can build the animation from here complete with auto tweening simple animations such as moving obejcts, changes in opacity and even layer styles.Then just save for web and select the .gif settings you would like.(note: there is an option in the bottom of the animation window to have it continue forever or single time only).Versions CS2 and up have it, I'm not sure about earlier versions of Photoshop, before we had to use ImageReady to make .gifs before the Animation window came out.