Frank,
If you read what Jim Daly sent me (above) when I went to Dubai in Feb 2008, and take note of the comments, especially about NOT riding on your own, but that will become very obvious when you get there.
There is info in 'Time Out' magazine, but it assumes that you already know the scene, and often it's just a repeat of a previous item.
I suggest you visit Wolfis bike shop, http://www.dubairoadsters.com/ there will be a name on the web site you can call to get started with them. A Camelbak is a MUST!!! Most of the Dubai Roadsters are serious riders.
I knew I was going to move to Abu Dhabi soon after I arrived in Dubai (was in Dubai for 4 months only), but one of my work colleagues was in the Roadsters, and I learned from him that the whole operation is very slick, which it has to be, given the riding conditions.
I didn't get into the Roadsters when in Dubai due to work/time constraints, but I think you will enjoy it, if you plan to ride there. Abu Dhabi didn't have the same type of club that I could find, so I was limited to cycling up and down the Abu Dhabi Corniche cycle track.
The nature of life in Dubai means that membership changes frequently, so I dont have any names of people that are still there, but if you call one of the contacts on their website, or visit Wolfis, then that will be a good start.
The weather is hotting up nicely for cycling, around 40 deg C at the moment!!!
Enjoy Dubai, if there is anything you want to ask, (non cycling), not sure if you've been out there before, then PM me. Although most of my time was spent in Abu Dhabi, and then Doha Qatar, I do have some useful tips for Dubai if you need them.
Regards
Ken