title: Proxy for command line utilities in Win XP
body: <p>How do I get command line utilities like ping to use the default proxy in Windows XP.</p>
  
  <p>proxycfg -u sets the proxy to the default (IE) proxy alright, but it doesn't seem to be working.</p>
  
  <p><strong>Update</strong>: I am behind a proxy and would like a way to check if a site is up or not hence trying to use ping! Also would like a way to telnet (without using Putty) to a specific site and port to check connectivity.</p>