Thanks for the link, good free analytics programs are hard to come by and there is a huge gap between free and commercial systems.
I currently use Trace Watch -
http://www.tracewatch.com/ and I have been very pleased with the result so far.
It might also be worth noting that you can use the analytics program within Google Adwords, this also provides very good stats, across the board and is not just limited to Google Searches or Google PPC.