I am in the process of putting my cd collection onto a music server. Currently, I am using my main computer with a couple of external hard drives. I want to assemble a separate system with enough space for four to six internal drives. Then I will use the external drives as my back-up system. I have a tower from an older computer which would have plenty of space for the drives, but there are only 3 spaces for the hard drives. I would like to install suitable brackets in this case so that I could add a few more drives to it. I've searched for them but can't find anything that would work. Perhaps I'm not using the correct search terms. I see new cases with spaces for 6 or more drives, but I'd rather not buy a new case when I already have a perfectly good case on hand. Does anybody know where I can find something like this? Thanks.