Solve Problem when Serial Number Not Working:
1. Uninstall the game First.
2. Go to Regedit | Click Start | Run | Type Regedit
3. Press F3, Fill Find What with Gamehouse
4. You will see Gamehouse Directory or
5. Go to HKEY_LOCAL_MACHINE | SOFTWARE | GAMEHOUSE
6. Find The game you want to delete
7. And then Reinstall the game
8. Do the UNLOCK (Read HOW TO UNLOCK)