From: "Bernard Delmée" Date: 2003-09-27T07:27:08+09:00 Subject: Re: windows help! > (The start dealy is a little bit of magic ... it's not just in the path, > or at least not on my machine). It's a command internal to the command interpreter which gets spawned by the backtick operator. This solution has the drawback of launching a DOS console. A 3d possibility is the following: require 'Win32API' SW_SHOWNORMAL = 1 mydoc = 'index.html' se = Win32API.new( 'shell32', 'ShellExecute', ['L','P','P','P','P','L'], 'L' ) se.Call(0,'open',mydoc,0,0,SW_SHOWNORMAL) This will launch the correct application associated with "mydoc", not just html.