For Install images: - WDSUTIL Options /Export-Image /Image: /Server: /ImageType:Install /ImageGroup: /Filename: /DestinationImage ...

For Install images:
-------------------
WDSUTIL [Options] /Export-Image /Image: [/Server:]
     /ImageType:Install [/ImageGroup:]
     [/Filename:]
     /DestinationImage
         /Filepath:
         [/Name:]
         [/Description:]
     [/Overwrite:{Yes | No | Append}]

[/ImageGroup:]    The image group containing the image to be
                                    exported. If not specified and only
                                    one image group exists on the server,
                                    that image group will be used by
                                    default. If more than one image group
                                    exists on the server, then the image
                                    group must be specified.
[/Filename:]             If the image cannot be uniquely identified
                                    by name, the file name must be specified.
/DestinationImage
    /FilePath:           Specifies the file path and name where
                                    the exported image should be created.
    [/Name:]                  Sets the display name of the image. If not
                                    specified, the display name of the source
                                    image will be used.
    [/Description:]    Sets the description of the image.
[/Overwrite:{Yes | No | Append}]    Determines whether the file as specified
                                    in /DestinationImage should be overwritten
                                    if an existing file with that name already
                                    exists. No means WDS will error if such
                                    a file exists. Append means the exported
                                    image will be appended to the existing WIM.
                                    The default is No.


EXAMPLES:
---------
To export a boot image:
WDSUTIL /Export-Image /Image:"WinPE boot image" /ImageType:Boot
/Architecture:x86 /DestinationImage /FilePath:"C:	emp\boot.wim"

WDSUTIL /Verbose /Progress /Export-Image /Image:"WinPE boot image"
/Server:MyWDSServer /ImageType:Boot /Architecture:x64 /Filename:boot.wim
/DestinationImage /FilePath:"\\Server\Share\ExportImage.wim" /Name:"Exported
WinPE image" /Description:"WinPE Image from WDS server" /Overwrite:Yes

To export an install image:
WDSUTIL /Export-Image /Image:"Windows Vista with Office"
/ImageType:Install /DestinationImage /FilePath:"C:	emp\Install.wim"

WDSUTIL /Verbose /Progress /Export-Image /Image:"Windows Vista with
Office" /Server:MyWDSServer /ImageType:Install /ImageGroup:ImageGroup1
/Filename:install.wim /DestinationImage /FilePath:"\\server\share\export.wim"
/Name:"Exported Windows image" /Description:"Windows Vista image from WDS
server" /Overwrite:Append