If you have a DVD writer on your PC it must have come with some software.........or Google- Free DVD burning Software or something similar...there's loads of freeware out there ........commoner
The one piece of advice is - do not buy software for this.
If you do not have some that came with your DVD burner then simply search on the web and find some that is free.
You need a photo to dvd software. There are many software in that kind. What i am using now is E.M. Free DVD Photo Slideshow. It is totally free. i suppose it is very nice.