let me congratulate you - I liked your site very much. I'm not posting a link to it, as you didn't so that yourself, but you might like to do so - other forum members should have a chance to see what a well-deigned and information-packed site you have there.
As far as the server logs are concerned, I'm surprised that your host isn't running something that can give you a graphic representation of your traffic online - most good hosts can do this quite easily, but from what you say it seems as though you might be getting the raw logs, which can take some unravelling.
If you want to use an analysing programme yourself I suggest that you take a look at something called 123 LogAnalyzer which, despite its less than stylish name, is one of the best Ive used. It will cost you $149, but if you're serious about site traffic analysis it beats lots of other programs hollow. You can download a free trial version if you
click here The company claims it only takes 10 seconds to install, which is faster than a fast thing, and the interface is about as friendly as it gets.