Default [Q] Slide2wake feature on Acer Iconia A500

I searched fervently and I haven't found an answer to my question so I decided to post it here:

The button broke on my friends Acer tablet and I wanted to help fix the issue so that they don' t have to plug and unplug the tab from the charger in order to turn on the screen. I have on my galaxy nexus an app with which I am sure many of you are familiar with called Touch Control. It works flawlessly for me and I love it! It has very limited support though. I want to have the same capabilities on the Acer tab. So my questions are as follows:

a) What does it take to insert this modification into the Acer stock Kernel?
b) Do I have to write an app that enables this feature, like touch control?

Thanks for the help!