title: Get some unique hardware info from user's system
body: <p>i want my application  be available only for one system, and i want to get one of  hardware informations that be <em>consistent, unique and available</em> in all systems... .</p>
  
  <p>In your opinion, what info is the best? and how i can get it with Visual Basic 6?</p>
  
  <p>Thank you</p>