title: Best way to Upgrade wamp 2.0 to 2.5
body: <p>My wamp 2.0 is using around more than 100 large database and a lot of projects.I also made around more than 50 virtual host. Now I need to upgrade wamp 2.0 to 2.5.</p>
  
  <p>I got some suggestion on internet that take back up of database and files , then uninstall wamp 2.0 and install 2.5 then set up every thing again, but it seems it is not a right way.</p>
  
  <p>What is the best way ?</p>