Today, the Washington Redskins will parade down Pennsylvania Avenue, meet President Reagan and go home with their Super Bowl trophy.

But what happens tomorrow?

For a team that just won the NFL title, 42-10 over Denver, with the most overwhelming offensive display in Super Bowl history, the Redskins bring many questions into their short and sweet offseason.

Tops on the list are how the team will juggle quarterbacks Doug Williams and Jay Schroeder, running backs Timmy Smith and George Rogers, wide receivers Ricky Sanders, Gary Clark and Art Monk, and offensive linemen Jeff Bostic and Russ Grimm, among others.

The Redskins also have their share of injuries. Williams said he probably couldn't have played this week if the Redskins had another game because of his strained left knee. He is limping noticeably and still shaking off the effects of a whirlwind 48 hours.

Williams is expecting to renegotiate his contract, but, at this point, he isn't ruling anything out.

"A lot of things happen in the offseason," he said. "I just want to enjoy the Super Bowl before I think about next July. It hasn't even hit me yet that we are the world champs."

Meanwhile, reserve linebacker Kurt Gouveia underwent an appendectomy yesterday morning at Arlington Hospital, the Redskins announced. Gouveia, who played in the Super Bowl, was admitted to the hospital yesterday and had the surgery soon after he arrived, a team spokesman said. The surgery was performed by Dr. Alan Wise.

Gouveia, 23, is expected to figure prominently in the Redskins' plans for the upcoming season because the team's starting linebackers are all going to be at least 30 by the start of the 1988 season.

And offensive tackle Joe Jacoby said he is going to have an arthroscopic exam done on at least one of his ankles in the offseason.

Coach Joe Gibbs said he began worrying about the 1988 season Monday morning, less than 15 hours after his team won its second Super Bowl in six seasons and further established itself as the team of the 1980s.

Gibbs made certain to praise every one of his NFC East division opponents, emphasizing how difficult it is going to be for the Redskins to repeat as NFC champions, much less Super Bowl winners.

The last time a team won back-to-back Super Bowls was in 1978 and 1979, when the Pittsburgh Steelers did it. The Redskins and Denver Broncos made two consecutive trips to the Super Bowl in the '80s, but Washington lost its second appearance after the 1983 season and Denver has lost two straight.

It's safe to say that the Redskins' preoccupation of 1987 will remain their preoccupation of the upcoming season. That focus is the New York Giants, who by virtue of a 6-9 record and last-place finish in the NFC East will have an easier schedule and earlier draft choices than the Redskins.

At the end of the regular season, the talk at Redskin Park was about two things: the upcoming playoffs, and how the Giants are going to rebound in '88.

It's also safe to say the Redskins know they have put tremendous pressure on themselves heading into the new season.

"People in Washington are not going to be satisfied unless we win every game," Gibbs said. "I know all the things that are coming up now. Everyone who plays us is going to be just like {playing} the Giants this year. There won't be a coach that plays us that will have to get his team ready. They're going to be ready because they're playing the Washington Redskins."

But which Washington Redskins will they play? Gibbs said Monday that Williams is No. 1 on the depth chart heading into training camp. He likely will be the starter going into the season unless something unusual happens, which means Schroeder's status is uncertain, especially since the team might not want to keep two high-paid quarterbacks on the roster.

Owner Jack Kent Cooke, who will make that determination based on conversations with Gibbs, could not be reached for comment yesterday.

It's also likely that Smith, who set a Super Bowl record with 204 rushing yards, will start for the team this fall. Rogers might be expendable, although no one's saying that yet. Gibbs said he likes both his quarterback and running back situations and would prefer to have safety in numbers and keep all his players on the roster. But that might not end up being the case.

Rogers could not be reached for comment at home yesterday. His mother said Rogers went home to Columbia, S.C., and was not going to be in the parade today.

The Redskins also are top-heavy along the offensive line. Grimm, whose contract has expired, is considered one of the best offensive linemen in the game, but he stayed on the bench as Gibbs chose to go with "continuity" late in the season. But something has to give at center, where Bostic played well, or somewhere else along the line. Either Grimm returns and someone else is benched, or Grimm stays on the sideline and Gibbs sticks with his Super Bowl line of Jacoby and Mark May at tackle, Raleigh McKenzie and R.C. Thielemann at guard and Bostic at center.

Gibbs said the Redskins "have fallen behind" other teams in scouting college seniors, but this is nothing new. It's one of the hazards of being in the Super Bowl.

On another topic, Gibbs said he was pleased with the way his team kept "a fever pitch" in the locker room after its Super Bowl-record 35-point second quarter. The Redskins did not think the game was over then, and feared a letdown.

"That was such a long halftime, it's over 25 minutes in the locker room," Gibbs said. "Everybody's excited, they come into that locker room yelling and screaming. What you worry about is over a period of 25 minutes, you can't sustain that and things start out badly and you lose the momentum."

Staff writers Sally Jenkins, Ken Denlinger and Mary Jordan contributed to this report.