Mission Specialist Rick Linnehan works on the Canadian robot, named Dextre, 13 March 2008

Two astronauts from the U.S. space shuttle Endeavour have successfully attached two arms to a giant Canadian robot called Dextre at the International Space Station.

Richard Linnehan and Michael Foreman conducted Sunday's seven-hour spacewalk.  Dextre's arms are 3.3 meters long and will be used in future maintenance and service tasks at the space station. 

Astonaunts plan to finish assembling the $200 million robot during a third spacewalk set to start on Monday. 

At the start of Endeavour's 12-day mission, astronauts attached a Japanese-built module,which is the first component of the new Kibo laboratory.

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