PAPI2 and PAPI4 are the only choices in AF2. May I sugest using the one that suits your criteria by viewing both in FS9.
References cited: AFCAD2 Readme:
"Most airports with runway lights have some kind of visual approach slope lights such as VASI or PAPI. These usually go on the left side of the runway, except for larger systems like VASI 16 that go on both sides. You can enable VASI and similar systems from the VASI tab page on the Runway Properties window. You can often get the slope indicator lights system type for a runway from the airport publications. When you enable VASI-type lights for the first time AFCAD will insert default values in the fields that will place the lights 750 feet from the threshold of the runway, 20 ft off from the edge, and with a 3.0 degree glide slope.
You can change these values if needed. Verify the location of the VASI lights on the AFCAD screen to make sure they do not interfere with other airport features, such as PAPI light arrays crossing a taxiway. Move them if needed to prevent this." - AF2 Readme.
Glossary:
a.) Visual Approach Slope Indicator (VASI)- An airport lighting facility providing vertical visual approach slope guidance to aircraft during approach to landing by radiating a directional pattern of high intensity red and white focused light beams which indicate to the pilot that he/she is "on path" if he/she sees red/white, "above path" if white/white, and "below path" if red/red. Some airports serving large aircraft have three-bar VASIs which provide two visual glide paths to the same runway.
b.) Precision Approach Path Indicator (PAPI)- An airport lighting facility, similar to VASI, providing vertical approach slope guidance to aircraft during approach to landing. PAPIs consist of a single row of either two or four lights, normally installed on the left side of the runway, and have an effective visual range of about 5 miles during the day and up to 20 miles at night. PAPIs radiate a directional pattern of high intensity red and white focused light beams which indicate that the pilot is "on path" if the pilot sees an equal number of white lights and red lights, with white to the left of the red; "above path" if the pilot sees more white than red lights; and "below path" if the pilot sees more red than white lights.