MotoGP 3: Ultimate Racing Technology

MotoGP 3: Ultimate Racing Technology cheat codes: 
All riders:
Note: This procedure involves editing a game file; create a backup
copy of the file before proceeding. Use a text editor to edit the
"motogp.cfg" file in the game folder.
Add the line "game/unlock_all_riders = true".

All tracks:
Note: This procedure involves editing a game file; create a backup copy
of the file before proceeding. Use a text editor to edit the "motogp.cfg"
file in the game folder. Add the line "game/unlock_tracks = true".