Displaying text in a textfield by pressing button embed in a movieclip

hi… ive been doing this for hrs on end… still no end result… i am using one of the tutorials from here as an example… drop down menu tutorial… because im using something similar as that

button 1 is the one thats suppose to display text in the field
i dont noe if the movieclip has anything to do wit it… or the _parent. thing…
thanks in advance… appreciate all suggestions and helps…