Unable to see the Web UI - URL issues

Hi,

I’ve just finished installing RT and I think everything is working (just
needs configuring!). For some reason I am unable to access via the URL (or
IP). It navigates to a page displaying “It works!”. I think it is looking
in /var/www/localhost/htdocs/index.html but I don’t know why! Can anyone
help?

Many thanks,

Andy