Here follows two links that may be of help.

http://www.youtube.com/watch?v=Q9OT_FykqXY

http://www.bric-itt.biz/pt-pt/course/brazil/cultura-empresarial

So, summing up, among other things:

- Emotions play a part in business in general, so many of us may  not be so straighforward and direct.   Brazilians like a talking, and some breaks in meetings are welcome, it´s when Brazilians may or may not talk about personal life and soccer team prefferences, ask about family etc.  Which sometimes, may leave an outsider uncomfortable.

- Brazilian Management might be "played by ear" sometimes, the American and European way can be seen at times "as rocket science".  A Manager in such places have all details, charts, schedules, statistics, numbers, and others data.  It´s like they are wired to have them beforehand. Brazilian may be more flexible on that, there´s some room to improvisation.

- Brazilian communication in general may be "beating around the bush a bit", if you ask directions to an American he will let you know wether he knows or don´t know on spot.   A Brazilian may answer "acho que sim" (I think so) or "talvez" (maybe) to a question that would demand an "yes" or "no".  

-This could result in you losing some time, because somebody that don´t know some information in your company may say he knows and "make a guess" or playing the jack-of-all-trades to operate a machine without qualification and ruin it.  Before asking something to any people, tell your staff or somebody you trust to bring the right person to the task.   And clearly state that no improvisation is allowed.

- Punctuality may be an issue, so if you want something done by 10:00 A.M, then say that you want it done at nine or even eight on the dot.

- Brazilian firms are very hierarchical, so the last word on decisions are always of the higher-ups. Even ideas are implemented from above.

- It´s very frequent in Brazilian firms the notion of dealing with people, rather than companies.    So, is important to be in the know of the who-is-who in the company you are going.

- Brazilian contracts often have many fine prints and minute details, so it´s advisable to have some Brazilian lawyer or/and somebody well acquainted with the market out there before making deals.