The old bind technique only works on splitscreen, systemlink etc. it doesn't work in single player campaign. tried that already
I presume this is because the mod is inserted right before the online custom class settings.
EDIT
Have seen a guide online which is actually for Single Player on WaW Zombies, but I presume given where you are inputting the data it will work on SP full stop, lets hope it's the same principle for COD4.