He is competing in the Men's 50km Mass Start Classic, It starts Sunday February 28th at 9:30 AM PSD. If you are on the east cost set your DVR's.
Again we'll be cheering for him even though he's Canadian.
Update: (3/2/2010): Unfortunately according to Wikipedia Brian did not compete on Sunday.
however Canada's coach decided to replace him with a skier who did well at an earlier event at the 2010 games and thus he will not become the first athlete in the world to compete in the Winter Paralympics and Winter Olympics in the same year.