How do I only kill/close a child window without killing the Parent all in VB.NET

How do I only kill/close a child window without killing the Parent all in VB.NET

I'm trying it with:
                    'tempProc.Kill() 'Kills all Iexplorer open
                    'tempProc.CloseMainWindow() 'Prompts to closes
But maybe I need to be working with that specific handle?


  Public Function EnumWindowsCallBack(ByVal hwnd As IntPtr, ByVal lParam As Int32) As Int32
        Dim sSave As String
        Dim ProcessID As Long

        GetWindowThreadProcessId(hwnd, ProcessID)


        Dim tempProc As Process = Process.GetProcessById(ProcessID)

        Dim processName As String = tempProc.ProcessName
       
        If (processName = "iexplore") Then


            'Get the windowtext length
            sSave = Space(GetWindowTextLength(hwnd) + 1)

            'get the window text
            GetWindowText(hwnd, sSave, Len(sSave))

            'remove the last Chr(0)
            sSave = Microsoft.VisualBasic.Left(sSave, Len(sSave) - 1)

            If (sSave.Length <> 0) Then

                If sSave.ToString.IndexOf("Google") >= 0 Then
                    sSave = "Found Google Search"

                    'tempProc.Kill() 'Kills all Iexplorer open
                    'tempProc.CloseMainWindow() 'Prompts to closes

                End If

                'Error below: Reference to a non-shared member requires an Object Reference
                Lst.Items.Add(sSave)
                'Lst.Items.Add(processName)


                If sSave.Trim <> "" Then
                    Debug.WriteLine(sSave)
                End If
            End If
        End If
        Return 1 'continue enumeration        
    End Function