I gotta admit it (not that I know ANYTHING about GIFFYs ;P) but I kept my CS2 installed so I could continue to use ImageReady.
I do use the ANimatION palette in CS3 if I'm just doing a quick animation - but imageReady is much more fluent in this area, I feel.
(Also, for slicing and dicing stuff for HTML/web, ImageReady is much more up to speed for me... and I don't want to learn FireWorks)
That tip that Oscar posted that Grefix posted is a good one though. I'll have to try that next time I want to open someone else's GIFFY.
THIS SITE REALLY DOESN'T EXIST
the way our EGO THINKS IT MIGHT!