it couldn't be easier .... well it could ... buhow was it for yout you'll cope
you've obviously got an internet connection (and presumably a home hub?)
in the vision package you will have the vision box ... some cables and two homeplugs.
the aim is to plug the box into the phone and internet connections.... this IS the vision bit
the freeview comes i through the tv aerial and if you have it ... the scart connects the box to the TV.
the phone cable comes with an adapter so you can still use a phone as well