Sorry, of course the NoFastMem util hides in SYS:System, not SYS:Tools
Now creating a script to run the game is easy:
Right-click it and choose Info
Change it's icon type from [Tool] to [Project]
Input it's Default Tool: IconX
Create a new text file called ZM
and type in:
(alter the path to where you put the game)
Now you can go to the game's folder and double click on the ZM icon to run the game.
Still have to reset after playing, to get back your Fast memory, don't know of any way to bring it up without that.