This forum is for questions about Apple Remote Desktop, Apple's software for managing networked Macs. For a question about a physical remote device, try asking in the MacBook Air forum:
There are 3rd party USB Remotes Controls that work with the 2011 & 2010 MacBook Air. Or you could get an external USB IR Reciver.
You can also use an iOS device such as an iPad, iPod Touch, iPhone as a remote control. Apple has an app for itunes & keynotes. the iOS device being used as the remote need to be on the same wireless network as the MacBook Air.
If you have a 2009 or 2008 MacBook Air, Pairing your Apple Remote with your computer explains how to pair the remote.
now, I had the same issue
solved it by transforming my phone (Nokia 2700 c ) into a bluetooth remote
see this pages:
search in the list if the phone you have is compatible, then install the little program and you may even have a remote MOUSE by just clicking it on your phone
PS. even if it yoru phone is not in the list there is a big chance that it will work, (mine wasnt in the list and it works like a charm) it is based on java if I understand corectly and most of the phones understand that programing language.