The Wales coach is backing his players to put the record loss at Twickenham against England behind them and believes his side will send out a message of intent to their Pool B rivals ahead of next month's tournament in France.

And Jenkins is hoping a morale-boosting victory against the Pumas at the Millennium Stadium will also lift the hopes of the Welsh nation.

Jenkins said: "This is the most important period from here on in – the World Cup starts here. All the boys in the squad know that. Every game matters and we've got to go out and win. It's our intentions to make a statement tomorrow so let's hope we can do that.

"This is the first time this squad have come together and it's exciting. There has been a lot of preparation which has gone into this team and it's the first time our Rugby World Cup squad will be measured.

"And if you listen to the comments of all the other coaches and captains over the last couple of weeks, we're all in agreement on how important these preparations are.

"We believe the next two games will prepare us well for September and we believe we have the ideal opposition. Being at home is a great place for us to be especially against opposition that are ranked higher than us in the standings. We know clearly where we are as we work towards the World Cup and intend to get our game right."

Jenkins has recalled James Hook, Dwayne Peel and Martyn Williams as Wales look to banish the memory of Twickenham from their minds.

"You will see a totally different team, different energy and different quality tomorrow. I have no doubt about that," he added.

"But we must remember Argentina are ranked fifth in the world so it's the right type of friendly match for our preparation. They have the most dominant pack in world rugby.

"For us to be competitive, we have to win our set-plays and gain a share of the ball. If we can share our line-out and scrum possession, I believe we can build a performance.

"We've got two contrasting teams: they are physical and will want to hold the ball while we want to play with tempo and play a wide game."

Jenkins says lessons have been learnt after the 62-5 defeat to England a fortnight ago.

"It was the first game in what we hope is a long process and we gave opportunities for many people. We realised it wasn't our strongest team. We've learnt hard lessons and had to live with that for the last couple of weeks.

"This is a strong Welsh selection and now it is about finding out against world class teams exactly where we are. We can't hide from that, we are positive group and excited about playing again in Cardiff."

Despite an expected crowd of just 30,000 for the visit of the Pumas, the former Llanelli boss is appreciative of the continued Welsh support.

"Historically, Rugby World Cup friendly matches aren't going to have the same impact on the imagination of the nation as much as tournament rugby. But what it does show is there are 30-40,000 people in Wales who have got a real appetite to watch this type of game. That's encouraging.

"Of course, everyone wants to support a winning team and Wales fans are no different. You never want to lose and hopefully we can get a performance and result to lift the nation.

"I don't think all the negativity represents the people that do matter and that's the supporters. I'm sure those who do come will get behind us and I hope we do them justice."