You'll have to have the latest software on your PC and iPod and at the time of writing the update is unavailable due to demand on the Apple servers (UK).
Picked up a G3 iPhone today but O2 the UK carrier has yet to connect it as their computer systems went down almost as soon as the opened their doors today.
Top Free games
iPint - pour a virtual pint then navigate it along the bar to your friend
Cube Runner - Fly your ship across a landscape filled with cubes
Blip Solitare - Classic Virtual Tennis Game
Jirbo Match - Match Memory Game
Advent - Colossal Cave Adventure iPhone game
Plus loads more and some top games from only $9.99 including
Super Monkey Ball
Enigmo
Texas Hold'em
Cro-Mag Rally
Bomberman Touch
Bejeweled 2
Moto Racer
plus loads more...
all here www.itunes.com/appstore/