title: Multiple Firefox Versions on Same PC
body: <p>I develop various web apps, use CSS and JavaScript extensively, and need to be able to test them on both FF 3 as well as FF 3.5.</p>
  
  <p>But, installing 3.5 overwrites 3.0, so I was wondering if its possible (and if so, how) to run both Firefox 3.0 and 3.5 on the same system, or am i stuck having to use 2 different systems?</p>
  
  <p>I am using Windows XP.</p>
  
  <p>Thanks</p>