I dont know about capture function, but for Alt+A to save you can use below given code in your form's KeyDown event
Private Sub frmFind_KeyDown(ByVal sender As Object, ByVal e As System.Windows.Forms.KeyEventArgs) Handles dgvFind.KeyDown<br />
If e.Modifiers = Keys.Alt Then<br />
If e.KeyCode = Keys.A Then<br />
btnSave_click(sender, e)<br />
'or your code to save <br />
End If<br />
End If<br />
End Sub
Hope this will help you.