Like Marne said, it isn't hard to do. The more tools you have, the better although the bare minimum would be two 13mm wrenches and a torque wrench.
Search for running boards where I and some others posted tips on how to install the running boards.
It took me a little more than 2 hours but I'm very methodical and I ran into things that weren't documented in the instructions, which is why I posted my experience.
Some of the things I did which aren't necessary include:
I inventoried all the parts first to make sure everything was there.
I wanted to use my Makita to bolt the brackets together so I had to find the socket adapter. I also had to find my Panavise to hold the brackets to make it easy to use the Makita. I then had to bolt the Panavise to a piece of wood which I clamped to my Radial Arm saw. I could have just sat at a table and use a socket wrench but remember that there are 48 bolts and nuts that need to be tightend down.
I could have used my old torque wrench with the moving needle but I opted to get a digital ratcheting torque wrench (an early CHristmas present). This way I didn't have to look at the needle as I tightened, all I had to do listen/feel for the click. As one of my friends pointed out, I could have bought quite a few more tools with the money I saved ($1200 just for the running board labor and excessive profit).
I built the brackets one day and the next day cleaned off the floor and installed them the next day.
When I first encountered the plastic hole covers on the bottom of the MDX, it took me a few minutes to figure out that you can push in the center and then pry out the assembly using a putty knife.
Everytime I found out I needed another tool, it took time to go look for it. One of the things I couldn't find was a set of Metric box wrenches (I just bought a new set from Sears, on sale!) but I had a ratchet that was small enough to fit inside the bracket.
So the lesson here is to make sure you have all the tools handy.