you can adjust the rears, if there is camber on the rear, your subframe bushings are probably shot. Replace them and you will notice a difference.
I thought an alignment would adjust the front camber/toe issues? It did for mine.
Past: 1998 323is (E36)
1986 325e (E30)
Present: 1997 Jetta GLX VR6
2004 325iT (E46) (pops)