I have P-4 2.66 PC with 512 MB RAM and PCI Express graphic card and I am aslo having SONY DVD writer.The problem is that I can't use SONY make blank DVD OR DVD -RW with it.Everytime the burn process fails.But if i use any other company's media like Samsung OR any unbranded DVD it works nice.now if I use the same DVD-RW with LG DVD writer at my friends place it works nice too.Its realy very strange that why cant i use the SONY media with SONY DVD writer? Plz. help..!