You need to handle the appropriate controls KeyDown event, I assume you'll be needing the Forms KeyDown event:

vb Code:
  1. Private Sub Form1_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles Me.KeyDown
  2.         If e.KeyCode = Keys.Left Then
  3.             'Do whatever
  4.         End If
  5.     End Sub