Its really not hard at all. Just remove all the screws that secure the bumper cover onto the car and pull the ends off the brackets. The only thing I had a problem with was seperating the ends from the brackets because they hold the bumper in place real well. Unfortunately I broke one into a few pieces as I pulled the end of the bumper. 19 dollars later, the bracket was replaced.

Aside from that, there is nothing really tough about it.

20 minutes is all it took me the first time I attempted to remove my front bumper. Sliding off the "grids" should take no more than a minute each, using a nice firm pull.