[TripSin]

I'd like to change the expansion of my server. I'm reading that I need to add/change the following values something like this:

World:UseClientBasedExpansionSettings = false
World:ExpansionSettings = 0

But I don't know WHERE to do this. Is there a file that needs to be edited? If so, where is this file? Every thread I've come across seems to just assume you know where to find this database or whatever it is that needs to be changed.

Thanks for any assistance