1. A wireless location system comprising: a network connection which is capable of receiving, from a plurality of signal collection systems, data indicative of a signal from a transmitter received at the signal collection systems; a location processor in communication with said network connection comprising a processor for processing at least a subset of said data indicative of signals from a transmitter to determine a location of said transmitter; and a database in communication with said location processor and storing a location record indicative of said location of said transmitter, said database storing information for use in indicating to a location processor a particular subset of said signal collection systems to begin collecting data indicative of the signals from the transmitter, said information comprising the identity of the wireless transmitter.