Vacuum gauge install????

whats up

i wanna know which vacuum line do i tap into on my 97 integra in order to run a vacuum gauge. a picture of the line or a breif description of where it's located will be helpful. all i know is that it's on the intake manifold but i dont know which line to tap into.
thanx

it is this on that runs from the fuel pressure regulator to the intake manifold

http://files.automotiveforums.com/gallery/watermark.php?file=/503/86285100_0025-med.JPG

Thanks alot dude. i appreciate it!

vacuum guage=boost guage