Hi I have just recently bought a lite on dvd burner shw 1635s, and I am having a problem when making my own dvd through nero or even backing up files. once the burning is complete I check the disc I have just burnt to and it comes up with a briefcase. when I open the case it comes up with a file saying briefcase database, upon opening this file it gives me a selection of programs to open it with.? I have never had this problem with other drives, what can I do to fix this problem??? its got me stuffed!! please help!!