if you were continually employed at the same place (so that they have records of your total contributions), most all payroll software will just stop your contributions into your 401k(http://www.autoadmit.com/thread.php?thread_id=3772991&forum_id=2#34514150)
ty for the info(http://www.autoadmit.com/thread.php?thread_id=3772991&forum_id=2#34514167)