Modifying Datatable + CSV Parsing an item in each row

Hi All,
I have a datatable which contains the following data;
Col 1    Col2    Col 3    Col 4    Col 5    Col 6    Col 7
A          B         C         D         1,2,3     E          F
What I would like to do is make a replica of row 2 (since row 1 is always the column headings) for each item in column 5 which is separated by commas.
So the output would look like;
Col 1    Col2    Col 3    Col 4    Col 5    Col 6    Col 7
A          B       &nbs ...