Hi
i have a flash movie which i have but dont know how to insert to the start of a website

You can do this:

<center>
<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
codebase="http://active.macromedia.com/flash4/cabs/swflash.cab#version=4,0,0,0"
id="intro" width="400" height="400">
<param name="movie" value="THEINTRO.swf">
<param name="quality" value="high">
<param name="bgcolor" value="">
<embed name="intro" src="THEINTRO.swf" quality="high" bgcolor=""
width="400" height="400"
type="application/x-shockwave-flash"
pluginspage="http://www.macromedia.com/shockwave/download/index.cgi?P1_Prod_Version=ShockwaveFlash">
</embed>
</object>
</center>

thx for the HTML

When you export your Flash movie it should also export the HTML that goes with it. All you have to do is copy and paste the OBJECT tag. This will preserve the flash dimensions.