Ahh, the Dow Jones! ... Sorry, bad reference.
1. Use whichever jumper setting your little heart desires. No, really, it doesn't matter all that much. For some people, they say that having two optical drives on the same IDE chain cause problems with copying from one optical drive to the other, but I never had this problem. So, in essence, you could put the CD-RW drive on the same chain as the DVD+RW; if you notice copying problems then move the CD-RW to the primary chain with the hard drive. To be on the safe side and avoid any possible copying issues, put the CD-RW on the primary chain with the hard drive. Remember to use an Ultra ATA/100 IDE cable on the primary chain! All you need is an ATA/33 IDE cable for the CD-RW drive, but if you use that cable on the same chain as the hard drive then your hard drive will become significantly slower at transferring/accessing files!
2. This answer is much like how the answer to the first question started out: use whichever software your little heart desires! Use one or the other or both. Honestly, it's a matter of personal preference.
No, I like women.