title: Upgrading Rails
body: <p>I have updated rails and have rails -v and it says 3.0.5. (which is good) when i open my old programs, will it still always use 3.0.4 as that is what was used? </p>
  
  <p>And ..
  when i create new one will it use 3.0.5 </p>
  
  <p>I have done this as i'm a newbie and having problems with tutorials from the rails by example book michael hartl and wondering if it is the version that is giving the problems.</p>
  
  <p>Thanks for any help.. </p>