COM Interop Excel: Let the user quit the application

[asedt]

I made this progarm in Visual studio 2005 vith COM Interop, I want to change the program so it does'n turn of excel and let the user control the application insted after the macro have run.

        Dim oExcel As Excel.Application
        Dim oBook As Excel.Workbook
        Dim oBooks As Excel.Workbooks

        'Start excel
        oExcel = CreateObject("Excel.Application")
        oExcel.Visible = True
        oBooks = oExcel.Workbooks

        'Walkaround för bug
        'http://support.microsoft.com/default.aspx?scid=kb;en-us;320369
        Dim oldCI As System.Globalization.CultureInfo = System.Threading.Thread.CurrentThread.CurrentCulture
        System.Threading.Thread.CurrentThread.CurrentCulture = New System.Globalization.CultureInfo("en-US")


        oBook = oBooks.Open("C:\ASEDT.xls")

        'Run macro / sub rutine
        oExcel.Run("MyOpen", parameter)

        'Close the wokbook and quit Excel

       oBook.Close(False)
        System.Runtime.InteropServices.Marshal.ReleaseComObject(oBook)
        oBook = Nothing
        System.Runtime.InteropServices.Marshal.ReleaseComObject(oBooks)
        oBooks = Nothing
        oExcel.Quit()
        System.Runtime.InteropServices.Marshal.ReleaseComObject(oExcel)
        oExcel = Nothing

        'Walkaround för bug
        System.Threading.Thread.CurrentThread.CurrentCulture = oldCI

What lines to remowe?? i guess those marked with: <--**

       oBook.Close(False) <--**
        System.Runtime.InteropServices.Marshal.ReleaseComObject(oBook)
        oBook = Nothing
        System.Runtime.InteropServices.Marshal.ReleaseComObject(oBooks)
        oBooks = Nothing
        oExcel.Quit() <--**
        System.Runtime.InteropServices.Marshal.ReleaseComObject(oExcel)
        oExcel = Nothing

[asedt]

Still nothing.. :(


I guess that i need to free the Objets in the program to avoid some memory leaks? but don't "turn off the excel objects". Is my thinking somewath right?