I am trying to find the best way to create a gif that represents a rectangular marquee with chase lights running around the perimeter. I will also need some other stuff happening within the marquee but I know how to do everything else.

I just got Photoshop CS3 but am not adverse to buying a GIF program if that is the best way to go.

Although it is not the design I am wanting, for purposes of clarifying, imagine a rectangle about 4 inches long and 2 inches tall. I want the "lights" to chase (with different colors) around the border. Light size would be just 2 or 3 pixels square (I would like to play with this size).

Basically, the gif would be a single light chasing around the border but lighting different colors (I definitely want to play with different colors) as if different bulbs are lighting. When they are
not "lit", I would prefer that they be invisible.

I hope that describes my idea. Any thoughts on the best way to go about this??

Thanks!!!