One of the video veterans at the university I went to described his favored technique of transferring slides to video: he flipped the slide horizontally in the projector and focused it on a rear-projection screen. Then he set up the camera (with its longest telephoto lens) on the other side, hooked it up to a monitor and adjusted the aperture, etc. till it "looked about right." Painstaking, time-consuming, space-consuming and lots of room for error, but he said the results were better than anything else he tried.
That, of course, was in the dark days of pre-digital, before Avid and other systems, an era which pre-dates my entrance on the scene by several years. Why don't you want to transfer them to a computer? Whenever I want to put still images into a video project (prints or slides) I always just scan them to an uncompressed raw or TIFF format and drop them in.