The setting BACD up could be pretty easy, but there are a couple bumps, which may stop it from working:

1. When you have ReadMe file in the flash (check with "dir *txt" command):

Use "more app-b-acd-x.x.x.x-ReadMe.txt" command, and scroll down to an example section. Copy the example into the Notepad, modify required parameters, and paste into the CME box. Here are a catch:

The default "_aa1_welcome.au" does not exists in the flash. Instead there is the "en_bacd_welcome.au" file.

2. When the Readme file not available, refer to the Cisco Unified CME B-ACD Guide (available here http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/bacd/configuration/guide/40tcl.pdf)

Use first example (Cisco Unified CME B-ACD with One AA), modify it with the correct hunt groups, pilot number, etc. However there is a catch too:

The example has 3 lines missing, comparing to the official "ReadMe  file":  

param max-extension-length 4
param welcome-prompt _aa1_welcome.au
param menu-timeout 6