Comments - zgmonkey

Make sure you have modloader installed first.

Minecraftforum.net

Then install the destroyer mod.
1. Open both "Destroyer Addon 0.1" and your mincraft.jar file with winrar or a similar program.
2. Drag the items from "Destroyer Addon 0.1" (not the folder itself, but the .class items and the destroyer folder inside of it) into your .jar file.