In case you haven't already tried it, you can make your own animations. I sometimes use UnFREEz from WhitSoft Development. It is a free program and extremely easy to use. You have to provide your own images for frames and convert to GIF format, which you can do with an image editor. Just drag and drop the GIF images into the interface, set the frame delay time, and hit "Make Animated GIF." UnFREEz will take care of the rest, including automatic interlacing and transparency detection. It is a very small download.
UnFREEz 2.1 - WhitSoft Development