Intake manifold.
More specifically, 2x to the piece on the intake manifold (just above the fuel rail area), and 1x behind/under the throttle body (comes out the passenger side of the throttle body, then goes behind it to the head).
Apparently I can't post pics anymore, so http://www.guapozx.com/users/dogpile/3hoses.jpg is a link to a scan from a parts fiche with those hoses circled.