I think you might like this thread here Guyspie. It has some great replies and posts in it. It speaks of the "progression" that you undergo in this practice.
http://www.astralpulse.com/forums/welcome_to_out_of_body_experiences/whats_and_whys_of_astral_restrictions-t46880.0.html;msg364736#msg364736
http://www.astralpulse.com/forums/welcome_to_out_of_body_experiences/whats_and_whys_of_astral_restrictions-t46880.0.html;msg364736#msg364736