While I am not a guru in Apache set-ups and others will do this much better, not to speak of the official documentation, I still find that to ensure initial success of the new installer, some help may be in order.
Consider this receipe only one of many possible set-ups and not necessarily even the best. The receipe worked for me in September 2008. If you come much later, things may have changed.
This Apache set-up illustrates mod_auth_saml. If you are interested in CGI, mod_php, or mod_perl use with Apache, or compilation of Apache httpd with above bits and pieces, please refer to Apache Setup Receipe
For more general information about ZXID.org compilation or APIs start reading in README.zxid.
mod_auth_saml Apache module documentation: SSO without programming.
zxid_simple() Easy API for SAML
ZXID ID-WSF API: Make Identity Web Services Calls using ID-WSF
ZXID Configuration Reference: Nitty gritty on all options.
ZXID Circle of Trust Reference: How to set up the Circle of Trust, i.e. the partners your web site works with.
ZXID Logging Reference: ZXID digitally signed logging facility
javazxid: Using ZXID from Java
Net::SAML: Using ZXID from Perl
php_zxid: Using ZXID from PHP
zxididp: Using ZXID IdP and Discovery
README.smime: Crypto and Cert Tutorial
FAQ: Frequently Asked Questions
README.zxid: ZXID project overview