The distributor rotor has a philips screw in it. Turn the motor over via the crank shaft counter clockwise until you see the screw. The best access to the screw is kind of up toward the back of the car. If this is the first time it is being replaced be advised that it is tight from the factory so be careful don't strip it out.

As for timing. The service pin connector is under the dash to the right side of the glove box. The wire colors are brown/black and green. Jump the two wires togther and the check engine light should come on. Use a timing light and check timing on the crank shaft pully against the timing belt cover. Ignition timing is 16 degrees before top dead center (the red mark on the crank shaft pulley) +/- 2 degress @ 750 RPM +/- 50 rpm (idle). All electric items should be off, like A/C, lights, radio. If the timing is off loosen the three bolts on the distributor and turn the distributor forward to retard and back to advance the timing so the red mark lines up with the indicator on the timing belt cover. Once the marks are lined up tighten the dist, check timing once more to make sure it didn't move when you tightened the dist. Remove timing light and jumper wire. You should be set.