This hack gives you:
999999k gold and 1183945 Gems and a lot of Keys
1. download DH3
2. download the hacked files at http://www.mediafire.com/?q3s42coyg3ldjeh
3. extract it
4. put the documents folder in the dh3 using Diskaid or other apps.
5. it will ask you to replace the old documents folder, do so.
6. launch the game,
Warning: it will be slow at the beginning. You may want to back up your "documents" folder.
Make sure you quite DH3 before using this hack