Because I can't resist to try to understand... when my great friend try something ;) .
Here you can see the original version of two images:
And, after the jump, the [en:HDR]ed version. <!--more-->
My friend is much too much good then me (he is an hacker in everything he does): it's just a game. So, take it easy please ;) .
Last thing. The effect is done using the beutiful (and very simple to use) Photomatix, available on [en:Windows] and [en:Mac OS X].