What is the mechanism for the reaction of acetyl chloride and aniline? I want to devise the synthesis of 1,2-dinitrobenzene without producing a large amount of 1,3 or 1,4 products. 

In my synthesis I have a step in which I obtain aniline. I would like to know the mechanism for protecting the amine using $\ce{CH3COCl}$ and triethylamine so I can keep it from reacting in the next step of my synthesis. I'm not really "fluent" with amine chemistry, and I have no good idea at the moment. 

If you cannot make picture of mechanism, please explain it with words. I must understand!
The mechanism is just a regular nucleophilic attack of an amine on a carbonyl, with the triethylamine just there to pick up any loose protons at the end of the reaction.