How to close an excel workbook opened in IE?

I have an excel workbook that is opened in IE. In this workbook there is a button that will manipulate some data and then it is to close the workbook. i use ActiveWindow.Close this works fine when i open the workbook in excel. But it does not work when i open the workbook in IE. How do i fix this?

Apparently closing an IE session from MS-Excel is not easy, nor straight forward solution for doing this. Read through this link --> http://www.xtremevbtalk.com/showthread.php?t=18185