Open your main.cs file with notepad or wordpad and scroll down until you see the hotkeys. Change the hotkey using the letter "m" if that is what mod wiz is asking you to use. Make the "m" some other letter that you don't have used on your hotkeys.
The main.cs is located directly inside your Think Tanks folder usually found at C:/Program Files/Shockwave? or where ever you bought TT from.
