Parameter Spy allows you to find parameters of a file when it launched. It backs up and replaces original file and shows a message box with paramaters passed when it launched by a launcher or another executable. Parameter Spy also restores its backup file.
http://www.mystercrowley.com/files/ParameterSpy_v1.0.zip
http://www.mystercrowley.com/files/ParameterSpy_v1.0.zip