How do i calculate the 3d Frustrum clipping pyramid?

hi
this is about the other post i did before this one…
well what i do wanna know is How do i calculate the 3d Frustrum clipping pyramid?

from the camera point to sumwhere i need to know the planes equations of each pyramid’s side right? how do i calc the pyramid ?
thanks

search for culling on the advanced forum

http://www.opengl.org/discussion_boards/ubb/Forum2/HTML/001960.html