I have an Asus EEE PC netbook. Since it's a netbook, it does not have a built-in CD/DVD reader/burner. In other words, I cannot insert disks and listen to music or watch movies and things like that. I've heard of external CD/DVD readers/burners, and I think that could be my solution. Could someone explain to me how they work and where I could possibly buy one? I would appreciate an answer as soon as possible. Thanks. 