Copy Ranges From Closed Files To Active Workbook

I have a number of files in a directory, with data in columns A:E, and variable rows deep (200-300) that I’d like to copy to the active workbook. I’d like to have a file window open to the same set directory (ie. “CArchives” and be able to select any file in that directory to copy.

Note:
There are 2 separate ranges to copy, which must be done separately because the headings are to be moved 2 columns over - also, there is data in beteen the headings and main data in the active workbook.

Range 1: Two headings cells in A1:B1 get transposed to C1:D1.
Range 2: the files’ data starts at A4 but gets inserted starting at cell A6 of the active workbook.