The page you want is
http://www.rpa.ie/?id=78 once you understand the RPA site its easy as the original url can't exist
http://www.rpa.ie/metro/ndp_ppp/content.asp?id=78
The simple schematic is here
http://www.rpa.ie/content.asp?id=299 again the link on the RPA site
http://www.rpa.ie/cms/htmleditor/content.asp?id=299 is impossible
Unless you spend ages designing content management systems you haven't got a hope in working that out. I'm reliably informed the errors on the site are human its not the software