You can generate a report using
Reporter (or any other reporting tool), export the report
results to a file, then import the information into the object set.
The following file formats can be used: csv, .txt, and a comma or
tab delimited text file.
There are required attributes
that you need in the file to successfully import users, groups,
and computers. The column header information must be provided in
the text file exactly as shown in the following table. Note that
some attribute combinations may take longer to retrieve than
others.
In the example text file
shown here, Domain and SAM Account Name are required column
headers. The data in those two columns will be imported into the
object set—any other information in the text file is ignored.