On-campus networked personal computer (PC) usage at La Trobe University Library was surveyed during September 2005. The survey's objectives were to confirm peak usage times, to measure some of the relevant parameters of online PC usage, and to determine the effect that 24 new networked PCs had on service quality. The survey found that clients queued for an online PC an average of 11 minutes during peak usage times. It was predicted that if 24 more online PCs were made available, the longest delay would be just one minute during busiest periods, if the other relevant parameters were constant. The method used to analyse the data was adapted from Erlang queuing formulae. (Contains 18 notes and 6 tables.)