Here's another one - packaged together for ease of implementation. Never tried it, but I'd be interested in hearing what you guys think of it - for those that have used it.

Eagle X v2.0, a pre-configured IDS system for Windows platform, is out
on http://www.engagesecurity.com.
It includes free software and a configuration tool will help you to
adapt it to your host/network environment very easily.

Product page: http://www.engagesecurity.com/products/idscenter
Download: http.//www.engagesecurity.com/downloads

What's new compared to Eagle X 1 ?

Snort 2.0 is used and PHP was updated to 4.3.2, IDScenter 1.1 RC3 is
included also. Snort is still installed as Windows service and IDScenter
is used
to manage and configure it. Online update feature is activated by
default using Oinkmaster from Andreas Östling.

IDScenter 1.1 RC3 has now an threaded AlertMail function and can also
send reports from the database server:
you only have to provide the queries in your template mail message or
use the standard SQL queries of IDScenter.
The HTML output can also be generated locally to a file using a
template. The viewer can be choosed of course (Internal log viewer /
Standard browser / Other browser software).

Software included (Credits are give online on
http://www.engagesecurity/products/eaglex)
Snort 2.01 Build 88
IDScenter 1.1 RC3
Apache 1.2.27
PHP 4.3.2
MySQL 3.23.55
ACID 0.9.6b23
JPGraph 1.9.1
Oinkmaster 0.8 Win32 (modificated, Original script by Andreas Östling) WinPCAP 3.0 final