Just undo the clip and pull it out... if it's like the `00 I30s I've worked on it's not a big deal. I forget the clip layout on the D2R bulb, but it wasn't difficult.
If you're really that nervous about it, head over to
http://www.phatg20.net or the FSM section here and check the factory service manual for directions, or go over to your local auto parts store and pick up a Haynes/Chilton for your car or the equivalent year Maxima.
the Maxima instructions should be more than close enough for your purposes.