"I didn't shake his hand then, but made sure I did at the end."
Beckham added: "When we got the penalty, Michael said 'are you going to take it or me?' but I wanted it badly.
"I may have scored the goal, but everyone in the team was fantastic.
"Nicky Butt came in and he was superb. He kept things going in midfield and put some great balls through."
Beckham, however, refuses to write Argentina off, despite having landed the psychological blow of defeating one of the competition favourites.
He said: "They are still one of the best teams in the world with the best players.
"We are now quietly confident going into the Nigeria game. But we are not through yet and we don't want to waste our good work.
"We were going through a tough time after the Sweden game because things were being said about us and we were not happy with ourselves.
"But the manager got us believing in ourselves and we showed that against Argentina."