Hi there Guru's,

I have a column that I want to sort in either asc/desc numeric order; at present I have the date displayed in this sort of format:

16/04/2011 15:45:23
18/11/2010 09:48:17
16/02/2009 17:17:29
21/08/2011 15:09:32

And all I want to have happen is (when the header is clicked on) sort the columns in asc/desc order. I've no idea where to start looking for this so any suggestions appreciated.