Points

i need a way in OPenGl ONLY, not glut, to select a point in the screen and transform it into world coordinates...is there a way to do this?

[LoCo3D]

Definitely, capture the appropriate mouse click event in your windowProc function and use OpenGL's GL_SELECT render mode.

[DaViper]

do a search on picking in this newsgroup

[Tim Stirling]

gluUnproject