Rainbow Six 3 Cheats

When playing prees start then put in the codes R1 R2 o x R2 x

At Main menu press start to enter Campaign or Custom mode then press L1,R2,L2,R1, D-pad left, D-pad Right, Square, Circle.
After entering code you should be able to access all levels in custom mode.

On the main menu, press START to access the Campaing, Custom Mission, Split Screen, etc. choices. Enter L1, R2, L2, R1, D-PAD LEFT, D-PAD RIGHT, SQUARE, CIRCLE.

You should be able to select any map in custom mission mode (and play the practice missions on any difficulty).