I am stumped with ACS and AD comms

Hello, I need some help.

Windows 2003 AD, Cisco CSA v, ACS server v , Windows XP SP 2 clients.
We are also running other Win app servers (Exchange, SQL, Sharepoint).

We have a bunch of CSA rules applied. It's a spaghetti combination, no
way to really diagnose problems by looking at just the rules.

Is there something fundamental which prevents AD and ACS talking to
each other? Would CSA rule ..
Telecom, Cabling and VoIP continues...