Another gif question

[beetle_breath]

Thanks for the help on my last question. Now I don't know if this is more a photoshop thing or a browser thing, but when I try to make animated images, they speed up like crazy. I've tried adjusting the delay, but it doesn't help. It either has no effect or it goes too slow. I'm using photoshop cs3 & firefox.

Sorry for all the level 1 questions :/