You probably should test this with an extremely simple demo.
Just an empty level with a rotating object. Something like that.

BTW, in your quite detailed description I'm missing the part about testing the exe before you renamed it and copied it into the windows folder etc.

http://www.puppenheim.org/
http://www.wuerfels-welt.de
Old Game Tutorial: http://www.puppenheim.org/MITutorial.zip
Free Game Editor: http://puppenheim.org/AlienalsWeihnachtsmann.zip
http://www.puppenheim.org/blender_starting_main_settings.txt