Problem opening EModelViewer

I'm using Visual Web Developer 2010 Express with SQL Server 2008 Express, VB.

The routine below should be opening EModelViewer.exe and does but with one problem.

Imports System.IO
Imports System.Data
Imports System.Drawing
Imports System.Data.SqlClient
Imports System.Configuration
Imports System.Text
Imports System.Collections.Generic
Imports System.Linq
Imports System.Web
Imports System.Web.UI
Imports System.Web.UI.Control
Imports System.Diagnostics
Imports System.Runtime.InteropServices

Partial Class Test
    Inherits System.Web.UI.Page

    Protected Sub Button1_Click(sender As Object, e As System.EventArgs) Handles Button1.Click

        Dim Pdwg As String = "C:\bruce\allegro\circuitworks library\SOIC14.sldprt"
        Response.Clear()
        Response.ContentType = "emodelviewer.exe"
        Response.AddHeader("Content-Disposition", Pdwg)
        Response.Equals("C:\Program Files\Common Files\eDrawings2010\EModelViewer.exe")
        Response.End()

    End Sub

End Class

It seems like this tries to open the actual program (Test.aspx) rather than the intended drawing (SOIC14.sldprt).  Does anybody know how to transmit the drawing name rather then the routine name with the response command?

Thanks!