In the directory you will find the following sub-directories and 
samples.

CUSTOM 
 CUSTOM.CSV - header file for all Custom Recipient attributes
 CUSTOM.INI - instruction for using the CSV file from the Admin program

CUST_ATT
 CUST_ATT.CSV - header file for importing the custom attributes
                for you Exchnage Site
 CUST_ATT.INI - instructions for using the CSV file from the Admin Program

DL
 DL.CSV - header file for all Distribution List attributes
 DL.INI - instruction for using the CSV file from the Admin program

MAILBOX
 MAILBOX.CSV - header file for all Mailbox attributes
 MAILBOX.INI - instruction for using the CSV file from the Admin program

TPL
 TPL.CSV - header file for importing/exporting the Details Template
           information
 TPL.INI - instruction for using the CSV file from the Admin program