Ok Herve may have a slightly biased viewpoint, but does make some valid observations.
Business generally in the UAE is often carried out not on the basis of sound professional skill sets, but on relationships. The more comfortable a local feels with you, the better the chances of you actually moving forward to the money making bit.
Be prepared, however, for the fact that everything (and I mean EVERYTHING!) will need to be laid out in clear, concise language and with masses of documentation to back it up. Don't worry, there is little or no chance of them actually ever reading it, but the weight of a document will hold more credence than the content! When it comes to presenting, they will seem to be distant and not focused with a very short attention span, therefore the key is to get directly to the point, illustrate it as much as possible with pretty pictures and diagrams and never, ever, present any financials! These should be kept back in an separate document and presented when, or if, you get to the point of discussing money. Be assured, even if the final figure is zero, it will be too much and you HAVE to negotiate.
A UAE and his/her money are hard to separate. The chances of finding one who will lay out at the first meeting or on a whim are very few and you will be made to jump through every hoop possible. It is to do with 'face'. Any venture must be a safe investment as, if it were to fail, the loss of face is more damaging than the loss of money.
When dealing with local ladies, there is a degree of protocol involved. Many of them are highly educated and savvy, often more so than their male counterparts. Never hold out your hand to shake. If she holds out hers, then this is permitted. When seated, always keep your feet flat on the floor, never cross your legs or show the sole of your foot. It is a very small thing, but is still taken as an insult by some ladies. My advice would be to start off the conversation by finding something around you that is an example of 'taste' and mention this before anything else. "I do like the colour you have chosen for the walls", "That is a very striking watch, is it Patek Phillipe?", "May I say that the design of your sheyla is stunning, who made it for you? Is it your own design?" Anything that gives the local lady the chance to talk about her colour sense, style, fashion sense or independence of choice are good and be prepared to allow her to talk on as this is flattering to her. This should last at least 10 minutes and then it is up to you to steer the conversation back to the points you really want to make. Don't talk about cars!
Be sure about your facts, local ladies are much more astute about many things than the men and you may find yourself closely cross examined. Beware also the local lady that hands over a comprehensive document and then asks you to implement or advise her on the contents. This has been written by a previous person trying to sell her the same product and is a device designed to either get you to provide the same or better service at a lower price, or a bear trap to see if you know your subject...because she certainly doesn't.
In summary, all dealings should be professional and business-like, yet with a touch of humanity. Don't bother sending emails to confirm points, they are rarely read and would never be admissable when it all goes wrong. A fax with a signature and company stamp holds more weight than anything. Remember, anyone working below this lady will be of limited ability and is only there because of it.
I could write a book about dealing with local business, but sadly I am too busy turning locals upside down and shaking them to see how much dosh falls from their dish dash!
Best of luck!
Knight