I am also going to be in the same shoes as you. I have a feeling it will have to do with the OM.db3 file. This is something I want to know as well for new deployments and also if we make a company wide change that I want to apply to all of the clients.
Example, I want all the clients to have "Show offline users in separate group" to be unchecked (default is checked), New Chat's to popup in minimized state, but turn on Show Messages at Righthand Corner of screen etc.
I can easily deploy this out as part of the MSI install so long as there is a way to with the client software.
This is where I need the blank filled in:
Step 1: Install MSI
Step 2: Copy custom client config settings over (user config settings and also ip address etc) - need your suggestion here as the creator of the application.
Step 3: Successful deployment :)