Trinity settings files?

I finally got Trinity installed, the package download took 90 minutes (I'm assuming the server is still being throttled by traffic) and it looks good. I am working through various things so I can set Cobber-Trinity up for end users in Australasia. So I have some questions. 1. I want to set the background (and other visual settings) via /etc/skel/ so that each new user automatically has a certain background (national flag), theme, desktop icons, menu type, etc.. What is the settings file(s) in TDE to accomplish this, and where is it located in the users home directory? 2. There doesn't appear to be a setting for touchpads to work like mice (e.g. touchpad tap opens file like a left click opens a file). Is there a settings or settings file somewhere that can accomplish this? I'm sure I'll have more questions but this will do for the moment. Cheers. Michael.