Prj Matrix

Does anyone know a good tutorial or web siote on building abnd understanding projection matices for right handed and left corrdinate systems. Im trying to make a 3d math library where it calcs a matrix for you to implent for software or hardware api’s. I mostly want it for software api’s.

Erm… I am not sure will this helps, I hope they do. =)

http://www.dgp.toronto.edu/~hertzman/courses/csc418/winter_2004/notes/lecture/ogl_vvol.html

http://www.flipcode.com/cgi-bin/msg.cgi?showThread=Tip-OGLD3DProjectMatrix&forum=totd&id=-1