As of Super Bowl XLVII, no.
No. They can't play in a Super Bowl against each other. Even if they made it to the playoffs, they'd have to go against each other prior to the Super Bowl knocking out the losing team.
No, OJ never played on a team that made the Super Bowl.
yes, they won the Super Bowl in the 2001 season. (or 2002, im unsure)
The Bears have made it to the Super Bowl twice, with one win (the '85 team in Super Bowl XX, who beat the New England Patriots 46-10) and one loss (the '06 team in Super Bowl XLI. They were beaten by the Indianapolis Colts 29-17).
No, not only did Archie Manning not win a Super Bowl but none of the teams he played for ever made the playoffs.
The made the superbowl in 2006 where they lost against the Indianapolis Colts.
They have made the playoffs 25 times with a record of 17-18.