The winners of the game will face South Africa in next weekend's eliminator and Hook spelt out exactly what it would mean to him to be a part of that match.
"Playing in the quarter-final of the Rugby World Cup would be a dream for me," he said. "Once you're at that stage then anything can happen and we all saw how Tonga pushed South Africa all the way.
"But we have got to get there first. There is just no way that we can look further than Fiji. If we don't focus 100 per cent on the job then we're going to slip up, and then we're going home.
"We're determined and confident but there's no way we can be complacent. I think we have the players for the big occasion, they love playing on the big stage and I think you will see the best of us this weekend. We know we have so much more to produce.
Hook, who made himself a reputation on the Sevens circuit will need to put all his experience to good use tomorrow and after analysis of Wales's kicking tactics against Australia, the gifted goal kicker knows foot balling skills could be key facet of the game.
"I'm a big admirer of Fijian rugby. I played on the Sevens circuit two seasons ago and they were awesome so we cannot afford to kick loosely against them. They love to counter-attack against sides and they have the players to cause anyone some real damage.
"We can't allow them to start playing as if it's a Sevens game because they're probably the best at the world at that. For us it's just about keeping our structure for the full 80 minutes. We haven't produced the type of rugby we know we can for the full 80 minutes, now we need to prove what we can do against Fiji.
After an earlier start at fly half, Hook says he is delighted to start in the number 12 jersey.
"I'm happy just to be on the pitch. Stephen (Jones) is a world-class player and I can only learn by playing alongside him. We work together pretty well and playing with him can only make me a better player if I ever go back to that position (fly-half)."
"This is a huge game for us and I can't wait to be involved. Both teams are competing for a place in the quarter-finals of the World Cup and we're pretty confident that we have the ability to cement a place in the last eight.
Wales: Gareth Thomas; Mark Jones, Tom Shanklin, James Hook, Shane Williams; Stephen Jones, Dwayne Peel; Gethin Jenkins, Matthew Rees, Chris Horsman, Alun-Wyn Jones, Ian Evans, Colin Charvis, Martyn Williams, Alix Popham
Replacements: T Rhys Thomas, Duncan Jones, Ian Gough, Michael Owen, Michael Phillips, Jamie Robinson, Dafydd James
Fiji: Kameli Ratuvou; Vilimoni Delasau, Seru Rabeni, Seremaia Bai, Isoa Neivua; Nicky Little, Mosese Rauluni (Capt); Graham Dewes, Sunia Koto, Jone Railomo, Kele Leawere, Ifereimi Rawaqa, Semisi Naevo, Akapusi Qera, Sisa Koyamaibole
Replacements: Vereniki Sauturaga, Henry Qiodravu, Wame Lewaravu, Aca Ratuva, Jone Daunivucu, Norman Ligairi, Sireli Bobo