going from teminal 1 to terminal 2 at Beijing Capital Airport

reading the web site has me a little nevours i am flying throw BJ back to the states and will have a short lay over how long does it take to go from terminal 1 to 2 and how do you do this. the web site is a little bit confusing could you please giving drictions.

please and thank you

also some one who is flying with me has a longer lay over then me and was wondering how much does a hourly room coast in usd