According to this BBC report, China is now the world's biggest emitter of green house gasses, producing 6.2 million tons of green house gasses in 2006. China is producing two new power stations every week, which means that they will increase their lead in absolute emissions and likely close the gap in per capita emissions (now 5 to 6 times less than America's).
Clearly any serious climate change plan that doesn't include China and India won't work. Which is why western nations, who have been responsible for most green house gasses over the past century need to rapidly escalate the development of green technologies and adopt climate programs that will drastically reduce our own emissions. Once this is done, western nations need to support the rapid adoption of these technologies by China and India and make it clear that failure to do so will impact trade relations.