I think most of us noobs have asked that question-it's no longer in use because MQ2DoCrack is so easy. I thought GHU (Game Hack Utility) made it look nice and easy, but once I tried DoCrack I forgot all about it. I would think it's not worth the trouble to maintain it.
If you read through the posts there's a ton of information about DoCrack, how it works and how to install it. I wouldn't bother with GHU.