How to restore my Windows XP backup files on Windows 8?

Question

I have just installed Windows 8 on my machine and when I try to restore my old XP backup files in Windows 8, it throws an error message 'unrecognized data'. I have searched online and found many links like this one: http://gallery.technet.microsoft.com/The-Backup-File-Contains-53b24ea0/view/Discussions

But one question arise in my mind that ntbackup.exe utility does not work in Windows 8 for creating backup so why I need to install this utility on my machine for extracting backup files. Is there any external software application which can do this without installing ntbackup.exe utility?