You can find a lot of nannies and drivers in dubizzle.com. Regarding the visa, the employer should be providing that. If you want married couple, it's better to hire an individual than through an agency. I know an indian guy who currently works in our company as a tea boy but he acquired a UAE driving license a year ago and is now looking for a job as a driver. Send me a private message if you are interested.
<em>edited by krazedk on 17/12/2014</em>