Hmm, the one in the attachment is only a single frame... I assume it was animated before you uploaded?
I'll resize it for you now, it's pretty simple in Fireworks.
I saved it. The only option I had was "Save Image As". I assumed that it would save it as an animated GIF.
I also tried to just use it as my avatar by linking from the location. It displayed the picture but not the animation. I really don't know anything about animated GIFs.