Get client computer name

Can someone tell me how to get the computer name of the users using my web page please? I'm using VB ASP .Net.

I tried request.UserHostName but that doesn't do it.

Thanks.

I'm no expert at web stuff, but I'm going to venture a guess and say this is not possible, at least with the standard HTTP headers. Maybe someone will prove me wrong.

I tested by viewing the "trace.axd" page, details, after a coworker accessed one of my apps pages. The name of his computer is "JAYT" and this string was nowhere to be found.