Then fill the first combo box with the number of seasons and when the user selects one the relevant number of episodes are shown

My code so far is here
Public Class Form1
Dim Search As String
Private Sub TextBox1_KeyPress(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyPressEventArgs) Handles TextBox1.KeyPress
Search = TextBox1.Text
Search = Search.Replace(" ", "+")
Search = "http://www.google.com/search?btnI=I'm+Feeling+Lucky&q=" & Search & "episode+list+wikipedia"
If Asc(e.KeyChar) = 13 Then
WebBrowser1.Navigate(Search)
TextBox1.Text = Search
End If
End Sub
End Class