Most of weblog owners are keen to insert Flash file into Header of the blog or wordpress website.
Here is the simplest tutorial to replace your Header Image file into Flash File in your wordpress website or blog.
1. Take a sample page of your wordpress blog or website by browsing into any one of the page, Take the source of the page and copy it and name it as sample.php in your working directory.

2. Now, using Dreamweaver open sample.php and insert an flash file into that sample.php . Dreamweaver will automatically updates the required Javascript code inserting into the sample.php file along with the SWF Code in the page.

3. Now, Its time to Edit the Code back in the sample.php file, Goto Code View of the page and Apply changes as follows.
a. Change the Path of Flash Banner. i.e If your Flash file name is header.swf Upload it to your working directory and give away the path at the yellow spots like /workingdir/header ( only at the noscript block you have to specify the extension of .swf )
b. Change the width and height of the flash banner accordingly

4. Its almost Done … Time to Tweak your Theme files
Open Header.php from your theme directory and place the following code below in the Head Section
<script src="<?php bloginfo('template_url'); ?>/Scripts/AC_RunActiveContent.js" type="text/javascript"></script>
Do not forget to copy back all the Scripts Folder Generated by Dreamweaver to the Theme Folder
Place back the Code what we have changed in the step 3 into the Required Flash Div
<div id="flash"> <script type="text/javascript"> AC_FL_RunContent( 'codebase','http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0','width','970','height','248','title','Adventure Huts','src','/wpadventure/wp/header','quality','high','pluginspage','http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash','movie','/wpadventure/wp/header' ); //end AC code </script><noscript><object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=9,0,28,0" width="970" height="248" title="Adventure Huts"> <param name="movie" value="/wpadventure/wp/header.swf" /> <param name="quality" value="high" /> <embed src="/wpadventure/wp/header.swf" quality="high" pluginspage="http://www.adobe.com/shockwave/download/download.cgi?P1_Prod_Version=ShockwaveFlash" type="application/x-shockwave-flash" width="970" height="248"></embed> </object> </noscript> </div>
Now Run the WordPress .. You will get it
