if you want to create animated text and don't have sufficient experience this is the solution fastext.urlearn.com it will generate flash movies for you to learn how to deal with site visit this page http://fastext.urlearn.com/howto.php
Hmm, in my opinion the things you can create with it aren't too pretty. regarding seo you should avoid flash to be the main part, and if you do use it, it should be really something unique and special, which is something this tool isn't going to give you I think.