Wow... most websites when they are first introduced... they never look nor operate this good... so well done on that part.
Quick question, what does internet explorer logo have to do with what your showing? And second question, Are you going to make an app for this, if so that will be a very good decision for this site's purpose.
For Each ctrl As Control In Me.Controls("pnlMainPanel").Controls
If ctrl.GetType Is GetType(System.Windows.Forms.Panel) Then
For Each subCtrl As Control In ctrl.Controls
If subCtrl.GetType Is GetType(System.Windows.Forms.TextBox) Then
If subCtrl.GetType Is ...