Slideshow / Slider??

I need to create a simple slider / slideshow which displays an image daily for seven days. The image would change every 24hrs for the seven days and loop continually. I thought this would be a simple enough project, but have been looking at slideshow programs, java, sliders etc...with no avail. I find that most transitions are limited to far less than 24hrs. I would appreciate any suggestions on the best program / route to take to use to accomplish this.

Thanks

-- Mac