Cheats and Hints

A2Z
Cheats, codes, hints, tips, walkthroughs, FAQs, and guides.
http://www.a2zcheats.com/cheats/gba/index.htm

eLook
Summary of cheats and codes.
http://www.elook.org/games/cheats/gba/381.shtml

GBA Cheat & Beat
Up-to-date cheats, reviews, walkthroughs, patches, codes and savegame files.
http://www.gbacheats.fsnet.co.uk

GBCheats
Includes cheats for the system.
http://www.angelfire.com/games5/gbcheats/