VS 2010 Accessing form after dublicating it in tabcontrol

Hello. I have form that gives me browser with awesomium SDK. Its name is "Webform". This form contains the awesomium object called mywebbrowser and it is a browser.
I have added second form and called it "Browser". This form contains TabControl that dublicates Webform in each tab. This way I have tabbed browser.
Here is the code:

Dim frm as New Webform()
frm.TopLevel = False
frm.Parent = Me.TabControl1.TabPages(Me.TabControl1.SelectedIndex)
frm.Show()
frm.Size = New Size(Me.TabControl1.Size.Width, Me.TabControl1.Size.Height)

The problem starts when I want to access the Webform in any tab and change the awesomium objects to other URL. Can you please help me with my problem? Thanks!