Passing arguments to a DOS command Visual Basic 2010

I would like to be able to pass arguments received from text boxes into a command line. What I'm trying to do is use the "rasdial" command and pass the username and password into it. Currently I can do this using a batch file however I find that this may be a little less secure than should be. Whereas if I have the user put in his username and password when he goes to login it would add a level of security.

So far I have come up with the code listed below and it does seem to work for other "commands". For this one I am getting an error message "Remote Access error 623 - The system could not find the phone book entry for this connection"

Does any one have any ideas on what I am missing here?  As I said I can call a batch file and it runs perfectly. If I were using a DOS command line it would be "RASDIAL "MYVPN" username password".  I am suspecting that this all has something to do with the quotation marks around VPN.


Thank you for any help you are able to send my way

 Private Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click
        Dim myProcess As New Process()
        myProcess.StartInfo.UseShellExecute = False
        myProcess.StartInfo.RedirectStandardOutput = True
        Try
            myProcess.StartInfo.FileName = "Rasdial"
            myProcess.StartInfo.Arguments = "VPN"
            myProcess.StartInfo.Arguments = TextBox2.Text   ' type "User" in the Text Box
            myProcess.StartInfo.Arguments = TextBox3.Text   'pasword
            myProcess.StartInfo.CreateNoWindow = True
            myProcess.Start()
            TextBox1.Text = _
               Replace(myProcess.StandardOutput.ReadToEnd(), _
               Chr(13) & Chr(13), Chr(13))
            myProcess.WaitForExit()
        Catch ex As Win32Exception
            MsgBox((ex.Message + ". Error Detected."))
        End Try

Select allOpen in new window