I've created a list/table in which one column contains date cells. In Excel
2007, clicking on the head-cell gives us filters like "Last week", "this
week", etc which are very handy.

I open the same Excel file in Excel 2003 but I can't find those date
filters. So I suppose that are something specific in Excel 2007. So my
question is simple and easy to guess:
How to make those filters in Excel 2003? I don't need all the filters, but
just the week-filters. OTOH, I would like to make sure that whatever is done
won't create problem in Excel 2007, because the same file is supposed to be
open in Excel 2003 and Excel 2007.