Ok have you read Firestorm717's entry - http://aarinfantasy.com/forum/229102-post1.html ??
Well first you either install the game first or play via Alcohol (the first has lesser processes)
Now when you get to
2. Right-click the game.exe and in the "Target" field...
Instead you need to right click of the game's shortcut so you can get to Target (right click - Properties - Shortcut tap. Now there will be a existing text.. leave that alone now you need to copy the address where you have the agth.exe file. So in that target text box it may look like (it the later will not be the same as every game has a different name and dictionary) this.
Target: "C:/Program Files/AGTH/agth.exe" /c "C:/Games/Cool Game/game.exe"
Afterwards just follow Firestorm717''s excellent steps
F