Hi, Just came back from Italy from 6 months of exhibition, and I burned all my material and movies on 16 DVD's -r. Now, back home (Israel) I tried to see the DVD's in my pc and there is no live sign, from any of these DVD's. I burned everything with a fire wire burner connected to pc, using Nero 6. i am now using winxp on amd computer. My DVD reader is Hitachi gd-7500. The DVD-r media are mostly Maxell (colored one) and Sony. I'll appreciate any help. 10x.