Help with decompiling bytecode

[Mr. Higgsbury II]

I have an old copy of the game and I would like to try and decompile it. It's in bytecode and I had a link to a tutorial for it, but unfortunately it looms like that page doesn't exist anymore.  http://oldforums.kleientertainment.com/showthread.php?8694-TUTORIAL-Decompiling-%28-and-Recompiling-using-SCiTE-%29-lua-files&highlight=decompile

 

I would really appreciate if anyone knows how I could go about decompiling it. I've done it before, but I might not have the tools anymore.

 

Thanks.