Re: internal dvd-rw installation...
On the drive itself, there should be labels that match up with the pins where the jumpers are located. (Master, Slave, CBL Select). I would make the DVD burner the Master drive and the CD burner the Slave. If slave doesn't work, try Cable Select.
*Fact: Microsoft Window's Blue Screen of Death vs Computerforums.org's White Screen of Death. Which is worse?