I'm new to the world of wireless, but I just installed my first wireless access point here at work. Today the warning light came on and I received the message than an unauthorized Mac address tried to access the network.

Since I'm dealing with a Mac address instead of an IP, how do I trace to figure out who the culprit is? Reason I'm asking is that I think some of our laptops may not all yet be authorized, so I want to make sure it's not one of them by mistake.