How to map a network drive in vb .net

I wrote the below code to map a network drive to another server:

 Try
            Dim storefile As System.IO.Directory
            Dim directory As String
            Dim files As String()
            Dim File As String

            files = storefile.GetFiles("\\" & DropDownList1.SelectedItem.Value & "\Y$\Checkpoints", "*")

            For Each File In files
                Label21.Text += (File & "<BR>")
            Next

        Catch ex As System.Exception
            Label9.Text = ex.Message
        End Try

The error message I'm getting Access to the path "\\YKCM1S1\Y$\Checkpoints" is denied. The path exist on the other server. How can I get around this? ThanksStart Free Trial