Shouldn't make a difference at all. You will just have up to 4 GB of room to back up to the DVD, as opposed to 700 - 800 MB on a CD. Jan - IL In a message dated 1/27/2010 4:45:48 P.M. Central Standard Time, Merrittrfl@aol.com writes: Does anyone know if I can backup my Family Tree Maker information onto a DVDR rather than a CDR? Does it make any difference? Thanks Sandy