PS CS3- make your anim in layers, then goto file-export for web
many pallete options to choose from, preview your gifs before committing.
CS2 did the same thing, but in a companion program called ImageReady (I miss it!!) 

One caveat: I can't get used to the new timeline system, so I usually switch it to the traditional frame animation system.

Is your copy of PS so old that it does't have an animation capability? You'll love this feature.

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"Have you ever made a just man?"
"Oh, I have made three," answered God,
"But two of them are dead,
"And the third--
"Listen! Listen!
"And you will hear the thud of his defeat."

-Stephen Crane

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