By clicking on the "Browse..." button, you can select the CABRILLO (log) file from your hard drive. You can also enter the path (and the name) of LOG-file manualy in the input box, but it's easier and faster with the "Browse..." button.
 
  After that, click on the "Upload" button. Program will read your CABRILLO (log), show it to you and allow any necesary corrections, before you click on the "OK" button at the end of page.