This is not a direct answer to your thread but my host also supplies the source addresses of the visitors. Maybe yours does also. I then use "Who Is" software to identify the visitors. My host is
http://www.ipowerweb.com. and the reports are generated by Awstats which I am told is a very good statistic reporter.
By generating a small database of my visitors, I can see the new ones and determine repeat visitors.
I hope this will help you in some minor way.