How to access querystring parameters from silverlight usercontrol?

I have created a silverlight user control and embedded it in an aspx page. Both projects are in the same solution. I am trying to access a querystring parameter from the silverlight usercontrol. I found this solution online but am not able to comprehend how to impliment it.
Can someone assist?
Where do I put the code, in the silverlight user control or the aspx page?
I have tried a couple of different things, but I am still getting errors...

http://forums.silverlight.net/p/204007/477356.aspx

Public Partial Class Page1
	Inherits Page
	Public Shared InstancePage1 As Page1

	Public Sub New()
		InitializeComponent()
		InstancePage1 = Me
	End Sub

	' Executes when the user navigates to this page. 
	Protected Overrides Sub OnNavigatedTo(e As NavigationEventArgs)

	End Sub

End Class

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