Additional notes:

M07 - Blog posts/info related to Performance Counters:

PerfMon Objects, Counters, Thresholds, & Utilities for SQL Server
by Jimmy May
http://blogs.msdn.com/b/jimmymay/archive/2008/10/15/perfmon-objects-counters-thresholds-utilities-for-sql-server.aspx


Quest Performance Counters of Interest (PDF)
http://www.quest.com/backstage/images/promotions/SQLServer-Perfmonance-Poster.pdf