Well, what do you mean image rotator? do you mean that every time you load a web page, a different image is displayed?
That's definitely do-able. Count the number of images you have, pick a (random) number between 1 and the number of images, and display that one.
By display, I mean generate the appropriate <img> tag that identifies the randomly selected image.
Take care,
Nik
http://www.bigaction.org/