A wonderful app, called Mouser!
You use the arrow keys, or the i, j, l, “,” keys to move the mouse by splitting the screen. Pressing enter clicks. Its really great since i HATE using the mouse. Once you get used to this, its absolutely great. I mean, i recently played a game of Starcraft using this…slightly hard, but, i mean, i won…
Anyways, try it out here, theres a tutorial on the site