"Buffalo Bills defensive tackle Marcell Dareus visited the Super Bowl media center Thursday. He said he does not view the Bills' move from a 3-4 front to a 4-3 defense as a major change.

"It's not that much different than what we've been doing," Dareus told The News. "The defense we were playing last year I look at as like 4-3 defense but with more shades and different schemes. ... I have no idea what the scheme is going to be like."

Dareus spent much of his rookie season playing a 3-technique, lining up on the outside shoulder of the guard. Before fellow defensive tackle Kyle Williams got hurt in October, Dareus spent a fair amount of time shaded to one side of the center, in a nose tackle-type position.

"I thought they might want to put me at speed end," Dareus joked. "I'll probably play 3-technique. Me and Kyle can play 3-technique or the shade."

Dareus said he would have no problem playing the nose spot more of the time. "That'd be just fine with me. I like playing the shade. It don't bother me at all."

He's aiming to build on his rookie season, in which he got 5.5 sacks. "My big thing I want to improve on is being diligent on my body and film work," he said."