On where a remote server or your local machine?
And which files? Templates? If templates then you CANNOT copy them from one style to another... as they will probably NOT be the same and doing so would result in the style you overwrote being screwed.
It's not the years honey, it's the mileage...
I do not provide any install services for phpBB, Mods or Styles.
Please do not pm me for support/scripting help - you won't get any reply. If you have a question then make a post in the appropriate forum.