textbox inserts type/code into a yahoo chatroom

hi im workin on a tool for yahoo for myself as a learning step. im quite new to visual basic 6 and i cant find the answer to this question anywhere. basically what i want this program to do is insert text/smilie/custom already typed things into the chatroom automatically for me without me having to type it. any help with this would be great as i said im learning and i cant find the answer

i already know how to do the forms etc its just the command to tell it to go to the active yahoo window i dont know ty if u can help