I really need help figuring out how to make a slideshow dvd with music, i

have a dvd burner, now what? okay, so i have this slide show of pictures put together, and i have a song in my microsoft windows media player library, and i have a DVD burner! so there's just gotta be some website that'll give a free trial of a software download which will enable me to put the pics onto a dvd which i can burn copies of, which will have the song playing while the pics go across the screen.
don't they do things like this at weddings for slideshows too?

HELP please! Ten points waiting for you!! (smile).