Gracey, there's a thing on the right hand side there that says "embed" highlight that box to the right of it with all that text. Copy that and bring it over to a post here, and paste it. If I remember right, it should be fine...

<object width="425" height="350"><param name="movie" value="http://www.youtube.com/v/4wGR4-SeuJ0"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/4wGR4-SeuJ0" type="application/x-shockwave-flash" wmode="transparent" width="425" height="350"></embed></object>

Yep, I just tried it out with this Chad Vader video...do what I mentioned above and it will be fine...