MSDN has a few examples in it and for once a clear explanation ie

' Declare a new DataGridTableStyle in the
' declarations area of your form.
Dim ts As DataGridTableStyle = New...

use MSDN index on TextBox theres loads of examples in there.

Public NotInheritable Class OpenFileDialog _
Inherits FileDialog
or

Dim OpenFileDialog1 As OpenFileDialog

should fix error 1, Ive had this, im still making the transition from VB6 to...