I am having a genuine win xp sp2 upgraded from sp1 by a Service Center when my hard disk broken the other day. Therefore, I don't have a genuine win xp sp2 CD. I am afraid that it will breakdown again one day since my guarantee period already expired. I am wondering if there's a type of software to be used for backing up my operating system and most of my data on CD or DVD. Somebody please give me a tip!