VS 2005 Embed Image In Email

i did this code to embed an image in an email:

Code:

If FileUpload1.HasFile Then
Dim emailMessage As System.Net.Mail.MailMessage = New System.Net.Mail.MailMessage
emailMessage.From = New System.Net.Mail.MailAddress(System.Configuration.ConfigurationSettings.AppSettings("txt"))
emailMessage.To.Add(txtTo.Text.Trim())
emailMessage.Subject = txtSubject.Text.Trim()
Dim plainTextView As System.Net.Mail.AlternateView = System.Net.Mail.AlternateView.CreateAlternateViewFromString(txtBody.Text.Trim(), Nothing, "text/plain")
Dim htmlView As System.Net.Mail.AlternateView = System.Net.Mail.AlternateView.CreateAlternateViewFromString(txtBody.Text.Trim() + "<img src=cid:HDIImage>", Nothing, "text/html")
Dim imageResource As New System.Net.Mail.LinkedResource(FileUpload1.PostedFile.FileName)
imageResource.ContentId = "HDIImage"
htmlView.LinkedResources.Add(imageResource)
emailMessage.AlternateViews.Add(plainTextView)
emailMessage.AlternateViews.Add(htmlView)
Dim smtpClient As System.Net.Mail.SmtpClient = New System.Net.Mail.SmtpClient
Try
smtpClient.Send(emailMessage)
Catch smtpexc As System.Net.Mail.SmtpException
Catch ex As Exception
End Try
End If

i am getting the runtime error:

Could not find the file how to solve this?