To download the specific file or content you are looking for, please clarify if you are referring to the novel by Stephen King (Richard Bachman) or a technical regulatory report.
The 1982 PBS documentary The Regulators: Our Invisible Government can be viewed via the C-SPAN website.
Based on your query, here are the primary resources for "The Regulators":
If you are looking for the Stephen King novel, it is available for digital loan in multiple formats at the Internet Archive . You can also find official eBook and audio versions through Simon & Schuster .