If you go to Browse Foods, select Poultry, then select Chicken, most or all of the options say either "prepared," "baked," "roasted," "fried," etc., which to me assumes that it has been cooked and should be weighed after cooking.
If I ever have doubt about whether something is cooked or not, I'll Google "calories in cooked ground beef" or "calories in uncooked ground beef," for example, just to compare and make sure I'm entering right.
"If you drop an egg, you don't say, 'Oh, shoot' and drop the other 11, do you?"
-Source unknown, but obviously brilliant
Reached goal 4/16/2010...but kind of afraid to look these days