At the main menu select extra and then select cheat codes. You can then proceed to enter the following passcodes.

Effect	Password
Unlocks a James Bond jacket for local multiplayer	f1n3att1r3
Unlocks James Bond's astronaut suit for local multiplayer	astr0b0y
Unlocks the 007 Pack, which includes the Walther PPK for single player and multiplayer and the Fast Switch gadget for multiplayer	g3tb0nd
Unlocks the Goldfinger Pack, which includes Goldfinger and Pussy Galore for multiplayer	au43v3r
Unlocks the Moonraker Pack, which includes the Moonraker Laser Mk2 for multiplayer	m00nlas3r
Unlocks the Nemesis Pack, which includes Jaws' astronaut suit and Baron Samedi's skeleton suit for multiplayer	v00d00f1sh
Unlocks the Stealth Pack, which includes the Long Reach and Acute Hearing gadgets for multiplayer	qbranch3d