How do i lin a domain like .co.uk to a site i made on piczo/freewebs/moonfruit so it just links it???

How do i lin a domain like .co.uk to a site i made on piczo/freewebs/moonfruit so it just links it. say games.co.uk if user tpes in that how do i link that to a site i made on freewebs/piczo/moonfruit?? i know i have to register wit ha domain company but how when i pay for [...] http://bit.ly/q5UyPa