Alonso commended FIA's decision to clarify the team orders rule, which most drivers agreed was necessary after Ferrari was fined $100,000 for Felipe Massa giving way to Alonso in a Ferrari 1-2 at the German GP in July.
"You have to respect it and stay calm," Alonso said. "That's the past for us, we just have to focus on Monza."
Despite a barrage of questions over the issue, Alonso refused to delve into the subject and instead preferred to focus on the Italian GP, which begins with Friday's double practice session.
"We should be competitive here," said Alonso, who crashed out in the last race, a wet Belgian GP. "We (have made) some changes, some analysis of what happened in Spa and I think we understood what happened. I think we have a better package."
Having described his first year at Ferrari as the best of his life, Alonso denied it would be a "disaster" if he didn't win the title.
"For sure, (it would be) a disappointment for yourself and the team," the two-time world champion said. "But the word 'disaster' is a little too extreme. It's a very competitive sport."More on F-1
Hamilton has 182 points to lead second-place Mark Webber of Red Bull by three points. Sebastian Vettel, Jenson Button and Alonso follow and are only separated by 10 points.
"There's still six races to go, but it's up to the rest _ Fernando, Jenson and myself _ to shrink the gap," said Vettel, who has 151 points. "We've already seen different leaders at different stages, so anything can happen. There's no reason to panic."
Button believes McLaren will carry over its Belgian GP form to another low downforce circuit. Hamilton won in Belgium and Button was running second before Vettel crashed into him to end his race.
"I'm positive for the rest of the season. We're not fearing anything at the moment," said Button, who finished second to Brawn GP teammate Rubens Barrichello at Monza last year. "All you need is one race for the leaders to have a bad race. We know there are still a lot of possibilities."
While the contenders battle it out, Michael Schumacher returns to Monza for the first time since coming out of retirement for Mercedes. The seven-time champion won five of his titles with Ferrari and is a five-time winner here, including in 2006, when he announced his retirement.
"It was a tough moment but the right moment," said Schumacher, who languishes in 10th place, 138 points behind Hamilton. "There was no regrets then and there are no regrets now to be back again."