Let me give you a best of three tools for analysing server log files.
One of these would definately suit your needs:
1. www.analog.cx - analog cx
2. www.mrunix.net/webalizer/ - webalizer
3. www.weblogexpert.com/lite.htm - weblogexpert
All tools are free, small programs, yet give good results and are FREE!..
A good online version of web analytics covering most of the functions covered by the tools above is statcounter.com
Of course you can use subscription based tools to give you more comprehensive web analytics, like Mint and MeasureMap (for your blog). And if you are patient enough a Google analytics account.
We will have to see if some nice Ajaxy type control panels come along to make the task of analysing results less tricky.