parallel Line to the view

[Krabb]

I am working on an selectingsystem for my 3d game.
I already programmed the collision determination,
but now i need to "draw" a line, which runs parallel
to the view.(I hope you understand what i mean -_-)
The field of view angle is 45 degree, and the line shuld start at the position of the courser.

i hope you could help me!! Thanks in in advance!

Krabb

[Krabb]

now i solved my problem by myself