Please consider us technologically impared. My wife and I have created a slide show presentation with Photodex. They recommended ImgBurn.com. We have downloaded the software (v1.3.0.0) but get these messages: "Logical Unit In Process... - when no disc loaded). Medium Not Present (with disc loaded). We have attempted to burn Memorex DVD+RW, Fugi DVD+R, and Plextor DVD+R. Can anyone out there offer assistance?