HttpHandler not working :-)

[Lloyd Dupont]

I have a simple HttpHandler
//--
using System.Web;
namespace Acme {
public class SimpleHandler : IHttpHandler {
public void ProcessRequest( HttpContext context) {
context.Respons e.Write("Hello World!");
}

public bool IsReusable {
get {
return true;
}
}
}
}
//--
I add in the web config file (perso/Web.config) this simple lines:
//--
<httpHandlers >
<add verb="*"
path="simple.as px"
type="perso.Fil eService, perso"/>
</httpHandlers>
//--

but when I type ' http://localhost/simple.aspx ' or '
http://localhost/perso/simple.aspx ' I have an error 404.
I know that my HttpHandler is registered because if I put incorrect value in
the config file I get the error page. however I never go into my handler (I
put some call to Trace.Write() in it, to be sure ...)

any tip ? advice ? experience ? whatever ?