From: "bpettichord@..." <bpettichord@...>
Date: 2006-09-10T14:34:08+09:00
Subject: Re: Running [Watir] Tests With the Browser Not Visible

The -b will work IF you require watir first:

  require 'watir'
  require 'test/unit'

Otherwise, test/unit will steal the arguments and not let watir have
them.

Or, after the requires, do 
  $HIDE_IE = true

Bret