How do you poach chicken?
By hunting chicken in a game preserve? ;-)

http://www.recipetips.com/kitchen-tips/t--324/poaching-chicken.asp

The essence of poaching chicken is a gentle boil in water, stock or other flavorful liquid. I really like poaching chunks of chicken in a thin sweet-and-sour sauce, then thickening the sauce, adding pineapple chunks, and serving over rice.