I recently had a situation where I wanted to customize the chart output from Log Parser, and after a bunch of research I eventually arrived at the conclusion that configuration scripts for create customized charts are probably the least-documented feature
Read More...
Read the complete post at http://blogs.iis.net/robert_mcmurray/archive/2012/01/29/advanced-log-parser-charts-part-1-working-with-configuration-scripts.aspx