title: install pydev without rights to eclipse installation
body: <p>My apologies if this has already been asked and answered.  I don't know enough about eclipse &amp; pydev setup to know what to search for.</p>
  
  <p>I'd like to use pydev, but can't modify the existing installation of eclipse.  Do I need to install my own eclipse so that I can then install pydev into it, or is there a way to install pydev off to the side such that I can then use it with the existing eclipse?</p>