Williams duo prepare for Brazil

Schumacher finished third in last Sunday's Australian Grand Prix, while Button retired from sixth place having fought his way up from 21st.

The German will be hoping for a repeat performance at the anti-clockwise Sao Paulo circuit.

"After our good start in Melbourne, I am looking forward to racing at Interlagos," said Schumacher.

"The circuit itself is very challenging for both drivers and engines.

"From the driver's point of view, Interlagos is a real challenge for the wide variety of corners, ranging from the quick left-handers at the end of both straights to a twisty infield where establishing a good rhythm is vital."

Meanwhile, Button is still on a high following an impressive F1 debut in Australia.

The 20-year-old - bouyed by a recent Silverstone test, in which he recorded the quickest time of the day - has never driven at Sao Paulo before but said.

He said: "I've heard a lot about Interlagos in that it's very bumpy and quite hilly.

"It's obviously difficult to get a true impression from the on-board footage that I've been studying and the BMW WilliamsF1 team is helping to develop my understanding further with data from last year.

"Our test programme at Silverstone this week went well and helped me understand the car better. It's been pretty good week for me and I am fired-up for the job at hand in Brazil."