I hope to avoid knowing anything about this tool thanks (in advance) to the new .NET regime. However as of this writing I may need:

"DCOMCNFG"
http://msdn.microsoft.com/library/en-us/vcmfc98/html/_atl_dcomcnfg.asp

"Setting Processwide Security Using DCOMCNFG"
http://msdn.microsoft.com/library/en-us/com/hh/com/security_1xbb.asp

"Setting Machine-Wide Security Using DCOMCNFG"
http://msdn.microsoft.com/library/en-us/com/hh/com/security_5isn.asp

"Setting Processwide Security Through the Registry"
http://msdn.microsoft.com/library/en-us/com/hh/com/security_3jw9.asp