Red Sun

Cheat Code Central
Contains cheats to allow access to missions, ships, weapons, and equipment, Game Shark codes, and strategy guide covering missions, ships, weapons, and rankings.
http://www.cheatcc.com/psx/codes/cwrs.html

GameFAQs
FAQs covering ranks, ships, weapons, characters, plot, controls, tactics, modifications, and mission walkthroughs.
http://www.gamefaqs.com/console/psx/game/196951.html