Email Contact Form

Aloha,
I made an aspx web form in visual basic. It is a contact form for users to fill out then submit it by clicking the send button which is supposed to send their info via email. I tried many different things from port numbers and smtp settings and can't seem to get it working. Please someone, look over my code and tell me what is wrong. Any and all help is appreciated. 
This is my VB file behind my aspx page
Imports System.IO Imports System.Net Imports System.Net.Mail Imports System.Net.Mail.MailMessage Imports System.Net.NetworkCredential Partial Class Contact Inherits System.Web.UI.Page Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load lblDateString.Text = DateTime.Now.ToString("MM-dd-yyyy h:mmtt") End Sub Protected Sub Button1_Click(sender As Object, e As EventArgs) Handles Button1.Click Dim mail As New MailMessag ...