These instructions are Snow Leopard-specific. First, download the Stanford Directory Utility Template installer. It will install a property list file into your home directory, which will make configuring your Mac to use the campus OpenLDAP directory system even easier than before. This template holds the record and attribute matching information, so you don't need to edit much.
Next, launch Directory Utility. It's located in /System/Library/CoreServices folder. Edit the LDAPv3 service to add a new directory system. For
the server name, enter ldap.stanford.edu in the field. The program will query the campus OpenLDAP directory, then ask you to choose a template for LDAP mapping. Since you just installed the Stanford LDAP template, choose that from the pull-down menu. Enter cn=accounts,dc=stanford,dc=edu for the searchbase.
You can configure other options as you see fit. You should also install the Kerberos Configuration Utility from the Essential Stanford Software site.