Pioneer CDRW/DVDRW software was installed on your computer and won't let you burn any files. You've tried to uninstall it, but your D: drive goes away as well. How do you get audio files burned on your drive?
Please install Roxio Creator. It should have DVD burning software. Well once you install that software and if it does have burning software it might have a utility that installs where you can drag and drop files using Windows explorer or through my computer from you C: hard drive to your DVD drive and it will burn them.
So yes you can burn most files once you have that burning software installed.