I have quite a few comma-separated-value (i.e., CSV) files that need to be
converted to XLSX format. Currently, I'm converting each file manually by
opening Excel, initiating an import, changing the original data type from
Fixed Width to Delimited, de-selecting the Tab delimiter, selecting the Comma
delimiter, changing some of the column data formats from General to Text (to
prevent incorrect conversion of those columns from text to numeric), and then
pressing the Finish button.

Is there any way that this process can be automated? Is there any way I
could initiate the process from a DOS command-line?