What steps did Nixon take to open foreign relations with China? Why was this an important step in Cold War politics?

http://www.google.com/search?hl=en&rlz=1C1GGGE_enUS379US379&q=nixon+and+china&aq=f&aqi=g3g-v5&aql=&oq=&gs_rfai=

Read widely, and take good notes.