I have about 5 or more different browsers and none, including Opera, will get a file from someone's hard drive using a link online. Not gonna happen. You will get an error as there is no way to just put a link like "file:///C:/Users/UserName/Documents/file_name.html" and expect to go to that computer's hard drive to get it. Not without using a file hosting service, having user download something like an ActiveX control, or using an app like TeamViewer or Windows own remote access/sharing service.
[URL="file:///C:/Users/Ron/Documents/startup.txt"]This is a link to the real file on my hard drive for you to get[/URL].