Hi, I have just upgraded to Win7 64bit and knowing how important backing up is, I need to buy a new hard drive space for backing my C: However, I am a complete noob to Win7 backup & restore. So I would like to ask: 1. If the size of my C: hard drive is 1TB but only about half full, when I use Windows Backup to save a drive image, would I still need the backup drive to be 1TB? Or would it only need 500GB? i.e. Does Win Backup need to copy like for like including the empty space for the image. 2. Although I don't expect to use a lot of hard drive space in the future, what is the ideal size for the backup drive bearing in my mind my C: is 1TB. Would I need my backup drive to be slightly larger like a 1.5TB as there would be incremental save and restore point? 3. Is it sufficient to just let win 7 do a backup without choosing to do a full drive image as this would save alot of space over time?