I am new to WSS 3.0. I'm trying to add new users and I have read that I have to have Active Directory service installed on my Windows Server 2008 Standard Edition server. However, several different versions of Active Directory appear when I try to install the service. All I need is to install the version of AD that permits me to add users for SharePoint access only. I don't want anybody to have any server rights other than surfing their SharePoint site and the access permissions I give them through WSS 3.0. Which version do you recommend? Furthermore, what configuration is involved to install and setup AD?