Google your way through the jungle and find light! wink
For instance:
http://angusj.com/resourcehacker/

(Although I never managed to get this done in the right way - but this is probably my own common way to fail in the simplest tasks! wink )

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