- Install SIMBL http://culater.net/software/SIMBL/SIMBL.php
- Copy SpotlightSIMBL.bundle to /Library/Application Support/SIMBL/Plugins/ (a)
- Copy Flashlight.osax to ~/Library/ScriptingAdditions/ (b)
- Disable Flashlight
- Enable Flashlight
- Open Script Editor on your Mac (look for "Script Editor In Spotlight") and paste the following code (don't change Snow Leopard for Yosemite)
tell application "Spotlight" to inject SIMBL into Snow Leopard