When you publish an HTML document from Flash, Flash automatically regenerates an enormous swatch of code:
<HTML> <HEAD> <meta http-equiv=Content-Type content="text/html; charset=ISO-8859-1"> <TITLE>Lesson</TITLE> </HEAD> <BODY bgcolor="#000000"> <OBJECT classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=6,0,0,0" WIDTH="775" HEIGHT="612" id="Lesson" ALIGN=""> <PARAM NAME=movie VALUE="Lesson.swf"> <PARAM NAME=quality VALUE=high> <PARAM NAME=bgcolor VALUE=#000000> <EMBED src="Lesson.swf" quality=high bgcolor=#000000 WIDTH="640" HEIGHT="480" NAME="Lesson" ALIGN="" TYPE="application/x-shockwave-flash" PLUGINSPAGE="http://www.macromedia.com/go/getflashplayer"></EMBED> </OBJECT> </BODY> </HTML>
The part you need to worry about is the bolded area.

