Brett Favre hopes to earn his first Super Bowl berth in 11 years Sunday

A trip to Super Bowl 42 is on the line Sunday when the Green Bay Packers host the New York Giants and the undefeated New England Patriots take on the San Diego Chargers in the National Football League conference championships.

At Gillette Field in Foxborough, Massachusetts, the Patriots are looking for their 18th straight win this season. New England beat Jacksonville last week, 31-20, and is trying to become the first team in NFL history to go 18-0.

San Diego is 13-5, and has won its last 12 games, including last week's 28-24 win over Indianapolis. However, the Chargers have some key players - including quarterback Philip Rivers and running back Ladanian Tomlinson - hindered by injuries.

At Green Bay's Lambeau field, quarterback Brett Favre looks to make it back to the Super Bowl for the first time in 11 years. Favre is playing in only his second NFC title game at Lambeau, where the weather forecast calls for temperatures around minus-14 degrees Celsius. Green Bay beat Seattle, 42-20, in a driving snowstorm last Saturday.

The New York Giants are coming off last week's win over Dallas and are looking to make it back to the Super Bowl for the first time in seven years. The winners Sunday will meet in Super Bowl 42 in Phoenix, Arizona, February third.

Some information for this report was provided by AP.