If someone has an idea how to fix this, I just discovered that the mouse wheel is supposed to work and is used to aim! But it doesn't work on my laptop! I'm using a standard microsoft mouse and my laptop is an alienware.. this is hugely annoying as I have a merc using a Browning M1919 which is auto-fire only...... he can't hit anything! My last resort is to switch to another gun that isn't auto-fire only... but that's avoiding the problem.. not fixing it.

And I love the Browning M1919 :(