Excel 2007 : Need corresponding Week Number and Week Begining Date to appear next to data search

I was very helpfully assisted earlier by a few people on here. Here is the next challenge.

The attached spreadsheet searches for non-zeros in a lis and displays them in column E. In column D, I need the corresponding week number and in column F the corresponding week begining date. I've tried pulling apart the folumula in column E to try and index this but my efforts are now turning into dead time.

As before, any help much appreciated.