/Enabled:{Yes | No} Enables or disables the image. /UnattendFile: Sets the full path to the unattend file to associate with ...

[/Enabled:{Yes | No}]
        Enables or disables the image.

[/UnattendFile:]
        Sets the full path to the unattend file to associate with the
        image. For example, "D:\Files\Unattend\Img1Unattend.xml".

  [/OverwriteUnattend:{Yes | No}]
        If an unattend file is already associated with the image, this
        setting determines whether it will be overwritten. The default
        is No.

EXAMPLES:
---------
To set values for a boot image:
WDSUTIL /Set-Image /Image:"WinPE boot image" /ImageType:Boot
/Architecture:x86 /Description:"New description"

WDSUTIL /Verbose /Set-Image /Image:"WinPE boot image" /Server:MyWDSServer
/ImageType:Boot /Architecture:x86 /Filename:boot.wim /Name:"New Name"
/Description:"New Description" /Priority:500 /Enabled:Yes

To set values for an install image:
WDSUTIL /Set-Image /Image:"Windows Vista with Office" /ImageType:Install
/Description:"New description" /Priority:500

WDSUTIL /Verbose /Set-Image /Image:"Windows Vista with Office"
/Server:MyWDSServer /ImageType:Install /ImageGroup:ImageGroup1
/Filename:install.wim /Name:"New name" /Description:"New description"
/UserFilter:"O:BAG:DUD:AI(A;ID;FA;;;SY)(A;ID;FA;;;BA)(A;ID;0x1200a9;;;AU)"
/Enabled:Yes /UnattendFile:"\\server\share\unattend.xml"
/OverwriteUnattend:Yes