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Don't know if this is the right place, if not please point me in the right direction.

A friend of mine bought a .ie domain name through novara.ie and bought hosting from blacknight.ie
He has been told from both that the domain is fully pointing to the hosting package, however on this pc I can't bring up the new site and always loads to novara, other computers I have tried don't have this problem.
He contacted blacknight and they told him to delete history etc, to try pressing ctrl+F5 when looking at the page and restart the pc.
I have done all this but nothing has changed.
Can some help me.
www.racketman.ie

Thanks
Tap