Once: Ninemsn Members - Win A Trip For 2 To Dublin Ireland
You'll get to see bands like The Black Eyed Peas and renowned DJ and producer David Holmes with stars such as Estelle, Kasabian, The Wombats, The Enemy and legendary acts such as Soul II Soul, The Undertones and more.
You'll need to be a ninemsn member, and answer in 25 words or less:
"Why do you want to join in the Guinness 250th anniversary celebrations?"
and then fill in a competition entry form.