Enter (later rereleased under A2A Simulations). This utility became a "must-have" for serious virtual pilots. However, with the software now classified as abandonware and official support long since ended, the conversation often turns to the installer and how to acquire it freely.
Disclaimer: The author does not host or provide direct links to copyrighted software. Always ensure you own a valid license for software when required by law. This article is for historical and educational purposes regarding legacy simulation software. -FSX- Shockwave 3D Lights Redux -Installer- Free
However, if you are building a new simming PC today, know that the "free installer" is a piece of history—use it to revive a classic, not as a primary solution for modern flight simulation. Enter (later rereleased under A2A Simulations)