Dropdown list with multiple columns

I have a dropdownlist control on my web page where my DataTextField value is a combination of 3 columns returned by my stored procedure.  This works except that I would like each of the 3 columns to line up better.  So right the now the data looks like this:

123 aaaaaaaaaaaa 1000
11 bbbbb 2000
9999 cccccccccccccccccccccccc 3000

I would like for it to line up like this:
123   aaaaaaaaaaaa               1000
11     bbbbb                          2000
9999 cccccccccccccccccccccccc 3000
This may ne more of a SQL question but thought I would try here first.