What do you mean by 'duplicate'? Can't believe that it doesn't work because there are probably a lot of projects with a movement code similar to this, where I never heard of that it doesn't work:
Code:
c_move(me,vector(key_w - key_s,0,0),vector(0,0,-dist_down),IGNORE_PASSABLE | GLIDE);


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