In Manila take a Taxi to the Victory Liner Bus Terminal;
and take the bus to Olongapo City (goes every hour);
then take a Taxi or Jeepney  to Magellans Point via the Arganaut Highway (see map).
(Trip cost about 10 US$) 

OR:  Take a Taxi all the way fom Manila to Magellans Point.
(Trip cost about 50 US$)

OR:  Take the Subic Sea Plane from Manila straight to Subic (Reservation: Tel. +63 47 252 2530)
(Trip cost about 200 US$)