[Zope] storing images

Hello zope, i want to store images, and call them by id. it needs to be used from other places, so it will go in a mysql table, base64 encoded. how to write a function, that gets the image by id, and returns it to the browser with the correct content type? i should use a python script for that? or can it be made in dtml or pt? how to make it respond to this? http://zopehost/images/image_id.jpg or something similar? ... with 'images' being the script.... thanks, k -- don't believe everything you think