Windows Vista does not support restoring .bkf backup files created with Windows NTBackup from Windows XP or Windows 2003 since NTBackup is replaced by different applications in both versions of Windows.
Now Microsoft has released a version of NTBackup that allows you to restore a backup made using an older version of Windows to a computer running Windows Vista or Windows Server Codename “Longhorn” (32-bit and 64-bit). The utility requires that you also enable the Removable Storage Manager feature.

To turn on Removable Storage Management in Windows Vista:

1. Click the Start button, click Control Panel, click Programs, and then click Turn Windows Features on or off. If you are prompted for an administrator password or confirmation, type the password or provide confirmation.

2. Select the check box next to Removable Storage Management to turn the feature on, and then click OK.

To install Removable Storage Management on Windows Server Codename “Longhorn”:

1. Click Control Panel and then click Administrative Tools.

2. Open Server Manager, navigate to the Features Summary section, and click Add features.
3. Select the check box next to Removable Storage Manager, click Next, and then click Install.

Download the different versions of the utility from here

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