Installed a Pioneer DVR-108 last week that I got from newegg.com. I've followed all of the great guides on here to try and get myself started cause this is my first DVD-RW drive. I been using dvd shrink and dvd decrypter and when I try to burn it it will start to write but then always drops down to o.o. I finally let it go to see if it would finish and it did but it toook 8hrs & 42 mins. I've done all the things that I've seen posted to help make this work right(new ASPI, DMA if avialable, lastest firmware, etc.) And now when I try to run dvd shrink I get Invalid DVD navigation structure. Very frustrated...please help.