1. Most cd/dvd writers will have come with software to burn cds/dvds. My pc
came with "Roxio", but I prefer Nero. Use whatever it came with, or get a
copy of Nero.
2. It depends what your drives are. If your DVD drive is also a dvd writer
then it will probably write both dvds and cds, so you can use it. If its
only a dvd reader then you'll have to use your cd rewriter - which of course
means you won't be able to write dvds because its a CD rewriter.
Hope this helps.
Brian.