I'm trying to decide if I should use my PC with ad DVD drive instead of a standard DVD Player. I will be using a projector with a 92" screen, from what I understand is that the computer will have a line doubler along with progressive scan. Do any of you have this kind of set up? There are some things that worry me 1. Computers are some times unstable. 2. Virus problems. 3. Speed. Let me know what you guys think. Thanks.