Include note in README indicating that Logon Failure Auditing is required

[EvanAnderson]

Users may not be aware that the Windows Server 2003 defaults do not include the right auditing settings to make this tool effective.

[dswitzer]

Just to let you know, this was definitely one of the issues I ran into on Windows 2003. Once I enabled logging, the script worked beautifully!

Here are some instructions on configuring the policy:

http://www.hosting.com/support/windows-server-2003/configure-login-audits-for-windows-server-2003