Adding A MSRDPClient7 Control To A Tabpage?

I am having a bit of a problem adding an MSTSCLib.MsRdpClient7 control to a tabpage form.The code snippet at hand:

Dim t As TabPage = New TabPage
Dim rdpcount As Integer = 0
If Not rdp Is Nothing Then rdpcount = UBound(rdp)
Debug.Print("Current RDP count: " & rdpcount.ToString)

[code]....

This code bombs on that last line with the following error:

System.InvalidCastException was unhandled

Message="Unable to cast COM object of type 'MSTSCLib.MsRdpClient7Class' to class type 'System.Windows.Forms.Control'. Instances of types that represent COM components cannot be cast to types that do not represent COM components; however they can be cast to interfaces as long as the underlying COM component supports QueryInterface calls for the IID of the interface."