Hi, I "switched" to an iMac last year, and have been making loads of DVDs with iMovie and iDVD. My question is this : how do I duplicate one of my DVDs ? I delete my projects after I have finished burning them, and now I need to make a copy of one of my past "creations". Is there an easy, Apple way of doing this, or do I need to go out and buy some additional software ? If so, what should I buy ? Thanks in advance !