To view and edit the registry, use REGEDT32.EXE on Windows NT® systems and REGEDIT.EXE on Windows® 95 systems. Most of the information required to service COM servers and containers is stored in keys and named values under the HKEY_LOCAL_MACHINE\SOFTWARE\Classes and HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\OLE keys. Note that HKEY_CLASSES_ROOT is equivalent to HKEY_LOCAL_MACHINE\SOFTWARE\Classes, and can be used interchangeably.
The CLSID key lists the CLSIDs for all the components installed on the system. Each CLSID is a GUID that appears in the registry in the form
{xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}
and each has a default component name.