Firstly, what you are describing IS piracy, IS copyright infringement, and IS illegal.
And even if your friend gets a DVD writer, there is still CSS encryption on the DVD. This means that, for example, if he was to copy the files from the DVD onto his hard drive and then try to play it, it would not work very well at all, because 1/4 of the content he had copied to his HDD would be gibberish.
If he wanted to copy DVDs, he would need a piece of software which strips the CSS encryption from the files as they are written to the hard drive before he burned them to a DVD. I believe that such software, although available here and there perhaps, is also illegal now.
There is software around to rip DVDs to Divx files to burn to CDs.
Lastly, I don't believe that this "friend" of yours exists, and that in fact you are talking about yourself. So why not come clean about that??
But if your question is, is this possible? Yes. It is. If you strip the CSS encryption away whilst writing the files from the DVD to your hard drive, and then burn those to a DVD disk, yes. I have seen it done.