Tired of reading all of the documents? Still can't find the date of births? Try typing from the left: 1852, 1874, 1899, 1931. They work in PAL, but can in NTSC.
Having problems with the code. Type 1692. It works in PAL, but from what I know it's the same in NTSC.
In the final confrontation of Carnby against the mutant version of Allen Morton if you use the Photoelectric Pulsar Rifle when Allen is almost dangerously close then you can knock him out in one shot and make a run for the "magic" spear in the corner to kill him. Also the Photoelectric Pulsar Rifle has to be charged by holding X while creature approaches for it to work.
Repeatedly pressing the X button will speed the intermissions and radio conversations up so that they're finished more quickly. Be careful when doing this however, because sometimes it will cause glitches.