I just posted this worksheet version 7, and Microsoft changed the URL to their option page the following day. That has been fixed, so you can again get option data from Microsoft, Yahoo & Morningstar.
So here is another update to the Covered Call / Put worksheet.
You will need Excel, and need to download the worksheet before it can be used.
This is an update to the Covered Call / Put worksheet. [more]
Here is an update to the Call / Put Excel Workbook. Corrected an error in pulling historical data from Yahoo.
An update to the Call / Put Excel Workbook. Corrected an error in pulling dividends from Yahoo.