One of the things that got me excited about going to Guam was the chance to try a new airline: Continental.
In Manila, Continental Airlines use the old terminal, NAIA 1. Their check in counters are in the right side of the terminal. Business class passengers get access to the MIASCOR lounge, as well as eligible Star Alliance Gold members.
They can also use the Singapore SilverKris and KrisFlyer Lounges and THAI Royal Silk Lounge in NAIA 1.