AutoCAD 2010 :: Automatically Setting Paths And Configuring?

My company has many clients that each have different pen table, text styles, directories, templates etc. What we would like to do is create a toolbar/ribbon that does the following but not limited too:

1) Change the CUI file to the current client

2) repath AutoCAD so that the program will find templates, textstyles, pen tables, etc unique to that client (we keep each client setup files like this in separate directories)

I am sure there are other variables, pathes, toolbars etc we will need to change as well. What I would like is a toolbar button or ribbon button to do this seamlessly so that each user can quickly and efficiently change from one client to another.

how I can accomplish this or variables that would need to be changed in a LISP routine etc