I have a system drive from my old Windows XP install from a machine I no longer have, and I need to open the registry on it to get my unlock code for Garmin MapSource. I know where the files are, and I believe the key I want is in the NTUSER.DAT file. Is there any program I can use to open the registry file to get the key out? As far as I can tell I can't use regedit for this. If anyone can point me in the right direction I'd greatly appreciate it.