Haha, I thought so... It's actually easy to do, so i'll just help...
Ok then, y'know the link at the top, it says, youtube.com and all of that, yeah well after that it says, watch?v= and then a code, well thats the code that you have to put in, so the vid in my profile, I put in... v/nM7KbHPJwAY, so thats it really, all you have to do is get the code after the v= and when you have that, put v/ instead of v= in front of it. Does that explain what to do? =]