I've got an IIS6 server with a boat load of log files.
What good tools are there that I can't use to get a decent amount of detail from the logs?
It can depend on which format of log file you've chosen and which details are logged (this is of course configurable), but I would try,
And for converting between the various log file formats or ther detailed analysis I think you can use,
This site looks full of information, Logparser Forums : The Official Microsoft IIS Site
And this if you're asking on ServerFault then this is probably worth a read, Coding Horror: Microsoft LogParser ;-)
See this question: http://serverfault.com/questions/13676/any-freeware-iis-log-analyzer