title: Check a string for non-numeric characters in VBScript
body: <p>I'm working on a Windows application that's written in VBScript and I need to check a string for any non-numeric characters, specifically anything a-z. I realize I could probably do this using the InStr() function in conjunction with a loop that checks for a-z but that just seems ridiculous. I have very little experience in VBScript so I really don't know where to go on this.</p>
  
  <p>What's a good method for handling this kind of situation?</p>