Hi,
Could you provide a bit more detail about what you're trying to do?
If you need all the fancy bits in that solution (i.e. charts and all that), then a change like this could get pretty involved, since the structure of that code is tied pretty tightly to the structure of the spreadsheet.
AdWordsApp.report('select Headline, Description1, Description2, CreativeDestinationUrl, Clicks from AD_PERFORMANCE_REPORT during LAST_7_DAYS');