Params Tool is a tool to call exe's with a parameter you write in the input box.
It will execute the written commands just like cmd prompt window.
If the input field is empty, the default cmd is "/?"
To start this tool:
Double click it, it will write to registry.
From there on it's just a question of shift+right click the exe you want to apply parameters to.
To remove from registry:
call the tool with the parameter /RemoveReg