Hey hi, you can try changing the permissions of the DICOM setting file to prevent it from being overwritten. Right-click on the dicom.txt file, go to Properties, and adjust the permission to make it read-only. This should prevent the file from reverting to older version after a reboot. Make sure to backup the file before making any changes.
And you can also get some information from Configuring DCOM and WMI to Remotely Retrieve Windows 7 Events (ibm.com).