I have an initial version of Performance Counter Grapher up and running. 

What is it?  If it is a program that will batch process Performance Counter log files and generate some trend charts.  Currently it generates charts for the last 12 hours, last week, last month, and last year.  I submitted a request to add the project to Codeplex as an open source project.  I am still awaiting approval.  In the mean time I am looking for some people to try it out and I would ideally like to find some others interested in contributing to the project.

What does it look like?
  It is pretty basic but it is usable at this point.

This is the sample of the Summary page.  Each of these charts drills down to a page with
four charts of a single counter for each of the configured sample durations.

What Technologies does it use?

It is written in the .Net framework 2.0 in C#.  It utilizes some operating system commands, Log Parser, and and open source charting library Zed Graph.

Interested in trying it out or better yet adding to the source code?  Contact me.