Inserting data into a second table with some time lag
Given the constraints of Express (http://msdn.microsoft.com/en-us/library/cc645993(v=SQL.110).aspx), your best option is to fake an agent job by using Windows Scheduled Tasks and call SQLCMD on a stored procedure every n units of time.  Here is a basic SQLCMD usage rundown: http://msdn.microsoft.com/en-us/library/ms180944.aspx.