Game Input MultipleXer

Hello,

I'm wondering if its possible to have a double key press set to an action? for example, double press W to sprint in MW3.

I used to play a lot of online pc games and this was the general set up on either counterstrike/delta force series, can't remember but old habbits die hard and I find myself double pressing W all the time to sprint.

Is it possible to set it up like this? i.e. one press W is normal pace, two press W in quick succession is spint?

It's not possible, and I think it will never be.

It's quicker to press two different keys at the same time with two different fingers...