To import an rtf into RTB try this

vb Code:
  1. Dim strfilename As String
  2. With OpenFileDialog1
  3.     .Filter = "RICHTEXT FILES (*.rtf) |*.rtf"
  4.     .FilterIndex = 1
  5.     .InitialDirectory = "c:\"
  6.     .Title = "OPEN FILE"
  7.     .FileName = ""
  8. End With
  9. If OpenFileDialog1.ShowDialog = Windows.Forms.DialogResult.OK Then
  10.     strfilename = OpenFileDialog1.FileName
  11.     Dim OBJREADER As StreamReader = New StreamReader(STRFILENAME)
  12.     richTextBox1.Text = OBJREADER.ReadLine
  13. End If