You can find the latest stable version of this How-To at The Linux Documentation Project web site:
http://tldp.org/HOWTO/XFree-Local-multi-user-HOWTO/
and the latest unstable version :
http://karlovo.demon.co.uk/~svetlio/ruby-contrib/how-to/XFree_local_multi-user-HOWTO/