I am looking at getting a PowerMac G4 off of ebay to turn into a dedicated DVR. My first question is what are the minimum specs that it should have? What accessories would I need to get this setup and running, i.e. video card,cables,software,etc.? Is this very difficult to do, I dont want to do too much other than record some random TV shows and possibly burn them to a DVD? I cant think of any other questions right now, but all suggestions/comments are very much appreciated. PS: I forgot to mention that I will be using this will digital cable TV service, I dont know if that makes a diffference.