The blooming of the French lilac -- Witters 108 (8): 1105 -- Journal of Clinical Investigation. Lee A. Witters. Endocrine-Metabolism Division, Departments of Medicine and Biochemistry, Dartmouth Medical School. Lee.A.Witters@Dartmouth.EDU
Here's a dirty script I wrote to install nagios and Lilac on a clean CentOS 5.4 install. This script doesn't care about anyone other than itself (it'll change the mysql password for instance) so may not be entirely perfect for your needs.