Parent paths is disabled in Windows 2003 IIS6 by default. You need to change your code the way it does not need parent path and use absolute root path instead.
<|-- #INCLUDE FILE="../include/utils.runtime5.asp" -->
<|-- #INCLUDE VIRTUAL="/virtual_path/config/include/utils.runtime5.asp" -->
See Also :http://www.winnetmag.com/Web/Article/ArticleID/23278/23278.html
You can also enable Parent paths using Your hosting control panel.