how do i flat a mesh?


how do i flat it, and if there are other method to twisted it or change its shape please tell me :-?
thank you

You could try out these:
Flatten Script
and Flatten Faces Mesh Tool 1.0

In edit mode, select all vertex and change the size with s Key on the z direction (hit z).

You may change the shape for instance usinge ctrl+shift+s and than use mouse, same with shift+p, warp tool is nice too, use shift+w, always in edit mode.

Have fun.