if you used a stored proc, you could probably dummy up the code to get the 6 lines that you need.
You might try an outer join of a table that has 6 rows in it, like an excel spread sheet, but you would need a row number of some sort that goes from 1-6 which is probably not available in your datatable.
Stored proc sounds like the best solution, at least that is what I would do.
Perhaps someone else more clever than me can come up with a better solution.
HTH