pale11

I have read the guides and my question I think is simple but I can't find it. I have an Mpeg4 lightroom 4 slideshow file that I would simply like to burn to a playable Blue ray disc. Does it have to be converted to a different format before being burned? In one of the guides it shows that I should be inporting a certificate file along with another file. How do I do this? Donation on its way Thanks