Sorry if this seems like a stupid question.

Here is what I would like to be able to do.

1. Save a worksheet within a workbook as a CSV file
There are lots of references (formulas and functions) within the
worksheet to other worksheets and I need the data only out so I can do a
final manipulation.
2. Open the CSV file and delete columns E - G
3. Delete row if column D = 0
4. Resave the file.

Is this all possible? If so, could you please guide me in the correct
direction. Thanks