Any program that can use gif images can suppress your image. I use Illustrator, Photoshop, Adobe Flash, and Indesign. Fireworks in my opinion, is more for website designs while Photoshop is more for rendering images which is used very often among multimedia and artists. So I would use Photoshop for a little animation and for decreasing MBs. Microsoft paint can help you too! You just have to play with it, though.