Software Deployment

I've been searching around and I can't seem to find a definitive answer. I'm just trying to add an LDAP server to existing Office 2007 installs, and the info floating around is so vague. I easily made a .msp with the OCT, but apparently that's only for new installs. It was so simple with Office 2003. Can anyone point me in the right direction on creating the equivalent of a 2003 CMW file?