I don't know about aligning to the grid in CS2, just the pixel grid in recent versions, but this should work in any Illustrator version:
- First make a guide and position it where you want the objects to align to.
- Then select all the objects as well as the guide.
- Click the guide one more time to highlight it. (It becomes the “key” alignment object.)
- Then click the button for the correct alignment in the Alignment panel; easiest if picking left or right aligned in my opinion.
Hope this helps, let me know if you need more help. :)
 
     
             
 
                     
                    