No, I just jumped in cold turkey, but Googling around produced this which you might try: http://jaymz.eu/2010/02/importing-existing-visitor-stats-from-google-a

No, I just jumped in cold turkey, but Googling around produced this which you might try: http://jaymz.eu/2010/02/importing-existing-visitor-stats-from-google-analytics-to-piwik/ http://jaymz.eu/2010/02/importing-existing-visitor-stats-fro...