At the back of the "cover" for the rear part of the armrest, there are 2 locating tabs on the inside rear. If these don't locate properly in the latches in the inner console assembly, I've found it throws out the fit at the front. Basically, if they are in correctly, you shouldn't be able to pull either side of the cover outwards at the rear.
As Betty says, as for screws (for the rear section of the armrest only),
2 at the back (for the cup holder or cubby hole) in the rear end of the console.
2 in the rear console sides (accessable when the above part is removed).
1 in the area where the MDI / CD Changer goes at the front.
1 at the rear of the front section of centre console (behind the sliding or standard cup holders).