I am not really technically minded but the drawer of my DVD player on my PC has died. I would like to now replace both the defunct DVD player and the CD rewriter with a DVD Rom and a DVD rewriter. I am told by one person that it is "simply" a matter of taking off the back, undoing four screws for each, unplugging each (not necessarily in that order?

), connecting the new equipment and replaing the screws and the back. Someone else has told me that it is "a very big job and requires quite a lot of re-wiring". Obviously I don't want to spend money where I don't have to, so your advice would be most appreciated. Please don't reply in technical terms though - I would rather you were user friendly! Also, any suggestions (if this is allowed on this site) as to where I could look for reasonable parts - apart from e-bay please.