A quick check -
Do you mean ntuser.dar or NTUSER.DAT as they are not the same thing, and you may have misread the last letter -
The NTUSER.DAT file is a registry file. Each user's NTUSER.DAT file contains the registry settings for their individual account. The Windows registry, as described by Microsoft, is a "central hierarchical database" that contains information about the software, hardware and user profiles contained on a computer. Windows is constantly referencing its registry files throughout the course of its operation. The configuration of the "HKEY_CURRENT_USER" branch of the registry is supported by the current user's NTUSER.DAT file.
The NTUSER.DAT file is in your user folder. In Windows 7 and Windows Vista, user folders are at C:\Users\USER_NAME.
Please tell me if I am wrong, as ntuser.dar is not normal -
Thank You -