The message says to get the updated version at www.microsoft.com/msdownload/ieplatform/ie/comctrlx86.asp.I then went to this address but I could not find any update. You should obtain the latest version of this DLL at Microsoft's website at (approx. 500k) if you.
System Requirements Operating System: DameWare NT Utilities requires Windows NT 4.0, Service Pack 1 or greater (including Windows 2000, XP, 2003, Vista, 2008, Windows7). The APIs used by DNTU also require the user to have the ability to authenticate to this remote machine over the network. In other words, it may require the Server Service, the NetLogon Service (Domain environments), and possibly the Remote Registry Service as well (Event Log View, Properties View, Processes View, Registry View, Services View, & Software View. Because these views also require access to the Registry). Please also note that the Remote Registry Service is turned off by default in Vista, Server 2008, and Windows 7.
Com Control: The following informational message will be displayed whenever DameWare NT Utilities is executed on machines that do not have version 4.71 or later of the Microsoft COMCTL32.DLL file: This version of DameWare NT Utilities requires a newer version of COMCTL32.DLL (Version 4.71 or later) than what is installed on this machine (Version x.xx)*. A newer version of this DLL can be obtained from Microsoft and is shipped with NT SP4 and IE 4.x or higher.
*Note: x.xx will be changed to show the version on the machine receiving this message. When this message is encountered, DameWare NT Utilities will still function however, it is recommended that the COMCTL32.DLL file be revised to a later version. This file is not re-distributable by third party software developers but you can download it from Microsoft and install it. At the time of this writing, two versions are available for download from Microsoft, 4.21 with a file name of 401COMUPD.EXE and 5.80 with a file name of 50COMUPD.EXE. These files can be found at the following URL: Active Directory: DNTU’s Active Directory functionality is only supported on machines running Windows 2000 and above. However, even though it is not directly supported, many of DNTU’s Active Directory features will still work on machines running Windows NT4 SP-6a, provided you also installed Microsoft’s Active Directory Client Extensions (DSClient.exe) for Windows NT4.
For more information about Microsoft’s Active Directory Client Extensions, please refer to Microsoft’s website. Active Directory Client Extensions for Windows 95/98 and Windows NT 4.0 Exchange 5.5: Support for Exchange 5.5 was dropped back version 5.x of the NT Utilities software.
Exchange 2000/2003: Exchange 2000/2003 support is only supported in version 4 and above, and only within DNTU's Active Directory Users & Computers portion of the Browser (and it does not require the Exchange Admin Tools nor User Manager Extensions). Exchange 2000/2003 functionality is not available within the Microsoft Windows Network portion (i.e. Users View, etc.) or Favorite Machines (formerly non-Browsable) portion of DNTU. When you open DNTU's Active Directory Users & Computers section on a Domain Controller, the only way DNTU's Exchange Tasks (right-click context menu) will be enabled is if DNTU also detects that Exchange 2000 or greater is installed on this specific AD site. 
If this specific machine where you opened the Active Directory Users & Computers section is not your Exchange Server (i.e. You have another machine in your Domain that is running your Exchange Server), then you will need to right-click on DNTU's Active Directory section, then select Add Active Directory Site, then add the IP-Address of your Exchange Server.
However, DNTU also requires that your Exchange Server also be running Active Directory. In other words, your Exchange Server must also be an Active Directory Domain Controller for this Domain. If you Exchange Server is not running AD (i.e.
Domain Controller), then DNTU's Exchange Tasks menu will not function properly and you will receive an error. If everything is setup correctly in your environment, then you should be able to right-click on an AD object (i.e. User, Group, Contact.) under AD Users & Computers (or in an OU), then select the Exchange Tasks context menu.
Then selecting your desired Task (i.e. Create Mailbox, Move Mailbox, Delete Mailbox, Establish Email Addresses, Delete Email Addresses, or Update now). Or you can also access other Exchange settings via the Exchange General, Email-Addresses, or Exchange Advanced Tabs, on the User Properties GUI. Just make sure the 'View Advanced Properties' setting is enabled. For the MRC Program: The MRC program requires the TCP Protocol. MRC Application (Installed on the Local Machine): Version 7 of the MRC program is officially supported on all Microsoft Windows Operating Systems beginning with Windows 2000.