Firstly I have no idea what no-chicken man is going on about??? Anyone?
Secondly, I would assume this is a large, existing company. Please don't fall for the old "tell us what you want" line, i would assume that this is an existing position that you are filling and that there is/ was a salary package attached to the position. a lot of companies ask the employer to come up with a figure, this is not very professional, as without some insight and knowledge on Dubai you would be hard-pressed to come up with an accurate figure. In most instances the prospective employee will come in lower than what they (the employer) had budgeted for - they simply accept the offer and save themselves time haggling and money. Only once you have arrived in Dubai and have lived here a month or two will you realise that you under estimated.
Tell them to grow up and act like professionals and make you an offer, they are the employer after all!
Secondly, have a look at this thread
http://www.dubaiforums.com/viewtopic.php?t=23858 , it will give you some insight as to what you should be looking at (as well as the schooling issue). schooling is another matter all together, they have a two year, 20% cap on the increase in school fees; in effect meaning that the schools are more or less free to increase fees by an average of 10% per annum! Bear this in mind when you evaluate your offer.