Firstly, you will obviously need a gamepad. Otherwise this is kind of pointless for you.
Alright, first download the emulator
here. Then you can either use my
custom premade control set, or make your own following the instructions on the site.
I don't quite recommend this for building, but it's great for deathmatches and the sort.
On a related note, please remember that my control set doesn't have anything for building, only the ability to plant bricks with "Enter," nothing else.
Enjoy. :D