just removed a tdk burner and replaced it with a dvd burner and nero wont let me burn with it but nero express recognizes it and lets me burn....i uninstalled it and reinstalled it a couple of times, i have 2 different copies from previous burners and each time i install and update to the latest version nero burning rom says it only supports tdk players. one copy came with a tdk player and one didnt, but nero express recognizes it fine....also i see an option to erase cdr but no option for erase dvd....are they the same thing