I created an ini file, placed it in the engine folder, and restarted the program, but the target checkbox on the right side of the GSA program is not displayed.
cherub SERnuke.com
Take a look at the existing engines to see what they have for their [SETUP] section, and try and follow that template as much as you can. Specify a unique 'engine type' for your engine so you can easily locate it, eg
Comments
Eventual engine scripts go in your GSA Search Engine Ranker/Engines directory.