when you reply to a thread instead of a quick reply. click the Go Advance button. once there you will see a youtube button. it will put in the forum code then u need to find the youtube video code and put it in between the youtube forum code. the youtube code looks like this. [YOU*TUBE] ***AxwS07iZhTs*** [/YOUTUBE]
You wont want those stars in it though. i put those so the forum doesn't post the video
if that doesn't make sense let me know hahaha