HI i have reasently purchased the dvd perfect stranger and as i allways do i tryed to make a backup copy for general use.afterwords i would place the original in to my collection to keep it pristeen.i use dvd shrink and dvd decrypter to accomplish this.an error message came up in the dvd shrink program telling me that it can not complete the task due to unknown copywrite protection.so i shut down the program and tried it again,thats when i discovered my dvd rom no longer worked properly.the dvd rom will still read music cd's both original and burned.it will read dvd-r's that do not have copy wright matterial on it.it will not read dvd-rw's or dvd movies both original and burned.i strongly suspect the dvd perfect stanger caused this problem.what i need to know is, is there away to get to the dvd rom to change the settings hoping that thats all thats needed.and if so how?or will i have to use the windows xp cd to repair the problem.my system is windows xp pro version 2002 pentium 4 2.4 ghz 512 mb of ram custum builti hope i have explained my problem well enough.and i hope you can help.thank you all.