Test to Production

Over time I have purchased various versions of product cart... 2.76->3.0->3.05->paypal beta ->Apparel Addon->3.05b (I believe it is the final code for pc w/paypal api integration.)

I have some mismatched versions of files and have occasional "strange" errors.  We have contacted support and they have been most supportive in working through them.

Now I need to set up the situation:

I have the exact order of install and source files per customer support.  I have combined them in the correct order and copied the custom asp files as needed from the existing website from includes and pc folders.

I have 2 directories on my hosting service /buy (production) and /test (test.)  I have upladed the combined product cart folder (created w/correct order of install files) to the /test folder, modified the appropriate includes files to point to the new directory and executed the setup process.  This process allows me to share the production database... I say this because /test is being used to get "everything working" and modify the asthetics of the test site before I move it to production.

I have said all of this to ask the following question: What configuration files (besides those files that dictate pc location) should I be concerned with in migrating from test to production?