How to constantly change movieclips?

Hi!

I can achieve this with php (so it constantly shifts text brought in) but for this I want to do it within flash, with movie clips. Basically what I want to achieve is something like these:

http://xuroq.co.uk/preview.php?id=47
or
http://www.scriptocean.com/text.html

** I want to be able to show a new quote with a logo beside it every 5 seconds or so. **There are lots of tutorials to accomplish this with php, but not only in flash with movie clips (my movie clips contain the quote and image) and I just can’t get my head around it (up until this point I was using timelines… yuck).

Anyone know of any tutorials for this, or basic starting points?

thanks