I have a cd-rom drive and a cd-rw drive. I want to replace one of these with a dvd burner which would also burn cds. I don't need one of the previously mentioned drives and was wondering which one do people usually do away with.

The present drives came installed on my Dell,. The cd-rom is Samsung 48x and the burner is Lite-on 24x.

Also the cd-rom is in the top drive and the cd burner is right below. Is there any need to switch slots when adding the dvd drive?

lois