title: Finding out what folders and files take the most space on a Windows computer?
body: <p>1) What good software out there already exists that allows one (preferably visually) see what folders and files are taking the most space on one's computer (Windows Vista compatible)</p>
  
  <p>2) Say I wanted to write a this program myself, what opensource tools out there can I use to get started?</p>
  
  <p>Thanks!</p>