Search for app-b-acd on the cisco website. I wouldn't recommend running the latest version on express 4.2 as I couldn't get it to load and had to downgrade to 4.1 to make it work. The same version & config worked fine once I downgraded so I would think to call 4.2 buggy. The documentation in the tar file has an example configuration.
Are you getting this error “Installer User Interface Mode Not Supported. The installer cannot run in this UI mode. To specify the interface mode, use the -i command-line option, followed by the UI mode identifier. The value UI mode identifiers...
The below trick might come handy when you have to add a new node to a cluster but you don't have or is unsure of the security password for the publisher. This procedure has been around for ages.
1) Login into the CLI of the Publisher.