Slightly built, unassuming, and balding at 31, Ian Walker was easy to miss at the 2002 London Boat Show in January; most of the 150,000 people who attended failed to recognize him. But it wasnt for lack of effort on the part of the Cambridge graduate. Walker diligently worked GBR Challenges booth on the ground floor of the expansive Earls Court Convention Center, pressing flesh, and trying, often in vain, to snag the publics attention as it rushed past, intent on getting a glimpse of Englands most famous sailor, Ellen MacArthur. No one would blame Walker if he was more than a little put off. After all, he was winning Olympic medals and world championships when Ellen--the first name suffices across the pond--was a just precocious teenager with oversized dreams. But when Walker signed on with the first British Americas Cup challenge in 15 years, he was well aware of the uphill battle he would face--both at home and in Auckland.