When you install ACS you will get a ton of events! Not all events are relevant for your environment. Securevantage has written a nice noisefilter guide. This guide introduces noise filters for Windows Servers 2000 & 2003 Security Events. Also interesting is the Secure Vantage Security Auditing Reference List : Over 1300 Windows security events and settings with interactive links to Randy Franklin Smiths online security wiki. The Service Account Authentication Success filter provides an example...(read more)

Read the complete post at http://scug.be/blogs/scom/archive/2008/08/28/acs-noise-filter.aspx