[themes] Timed image and text display

Hi all. I really need to display a number of images of the same dimensions on the main page, each image should remain for n seconds then be replaced by another from the database. I also need to display some text over the image and change that every n seconds. Is there a module that permits display of images sequentially or selected at random from the database? Is there a module that permits timed text quotes on a page?, once again random or sequential. Failing this can someone point me to some php code that I could modify for the above. It's years since I used php so the whole thing is a significant learning curve. Many thanks Roger