How to beat secret boss?

[cyberwuff]

I know you have to install a patch to get this option - and I think I did, but how do I know if it worked? If I go to "New Game", I don't see a "Very Easy" selection, or "Inferno" ('course, I've not beaten Hard mode yet anyway). The only thing that seems different is that when I save my game, in small text the game-play time is now displayed for new saves, where they weren't before.

And if it is installed - I guess I can't get to the see this secret boss unless I beat Inferno mode (full game) first...?

Thanks...