Enabling High Availability for Central Administration Site

We have a large MOSS farm in production with multiple web front end, app servers and a clustered SQL server. The one single point of failure we had was the Central Administration site via a single web front end server. These steps allow you to publish the CA to an App server or other Web servers so that the CA site has High Availability. Please note I don't know if this is officially supported by MS. See update at the end of the post but it looks like this is supported. This post has moved
http://iunite.com.au/wp/blog/index.php/2011/09/enabling-high-availability-for-central-administration-site/