If you happen to have a Garmin GPS they have a free free download available called 'FlightBook' :
www8.garmin.com/support/download_details.jsp?id=35
The GPS automatically synchronises with FlightBook when you connect it to your PC. The blurb on their site goes as follows:
What is FlightBook? FlightBook is a PC application which allows you to transfer, manage, analyze, save, and print flight data from your GPSMAP 96, 96C, 196, 296, 396, 496 and iQue 3600a. This flight data will automatically contain total time, day and night condition times, cross-country and PIC time, departure and arrival locations (airport name and ID), number of landings, aircraft ID, distance, max speed, and max altitude for each flight. Once in FlightBook, the flight data can be updated with additional information, including number of instrument approaches, actual and simulated instrument time, remarks, etc. Totals for the flights can be specified for all flights, select flights, or flights in the last user-specified number of days. Pilot logs can be printed using the 'traditional' layout or customized to fit the pilot's needs.