New quarterback Kevin Kolb says he is finally comfortable with the Arizona Cardinals' offense and looks forward to putting his newfound knowledge to a stern test when the team travels to Green Bay to face the NFL champion Packers. "Besides the game-planning part of it, we're pretty much done with the core install of the offense now and I understand it all and feel comfortable with it," he said before the week's final practice on Wednesday. "Now it's just a matter of going out there and getting enough reps, and that's vital." It has been difficult, Kolb said, to unlearn the things he knew as a member of the Philadelphia Eagles, but after two weeks of training camp he understands what his role should be. Coach Ken Whisenhunt said Kolb and the rest of the first unit could play into the second quarter of Friday night's game. "He'll play a little bit more than he did last week, but I don't know how much more," Whisenhunt said. "We still have some quarterbacks that we need to see play as far as getting them prepared, so it's a tough situation to try to balance." Kolb completed four of seven passes for 68 yards in his Arizona debut last Thursday night, a 24-18 victory at Oakland. The minute he got back on the training camp practice field, the Cardinals threw more at him. "My mind got a little twisted there for a couple of days and then now I'm clearing it back up, but that's part of the process," Kolb said. "That's part of going through training camp and preseason and seeing how you handle it and then being able to slow it down for the games. So I wouldn't say I'm chasing my tail, but I wouldn't say I'm on top of everything yet. There's still a lot of learning for me." Source: Associated Press