Hi there,
There is a great nursery very close to DESS. Infact, there are some kids that have moved on from this nursery to DESS last year and are going next September as well. I am applying to DESS for September 2014 (when he will be old enough to go).
The nursery is called Aga Khan Early Learning Centre. It has great teachers and the environment is wonderful. My son goes there right now and we are very happy with the school, what he is learning and the curriculum. Its about a 5 minute drive to DESS.
Check out their website if you are interested: www.akelcdubai.org
Best of luck to you in finding a great place for your little one(s)!!!