Unlocking all factions in mtw2

[Doomsayer19]

Whenever I try typing in

C:\Program Files\Sega\M2TW\data\world\maps\campaign\imperial_ campaign

into the windows search I always get a message saying that the folder doesnt exist, am I typing in the wrong thing or am I just searching in the wrong place?

[Warmaster Horus]

Like sapi said, I think you need the unpacker for that.
You can, however, search it manually. Go in your M2 folder, go in data, then world, then maps, campaign and imperial_campaign. If you can't find it, then you probably need the unpacker.