Ok steve.......... having looked at your board root you need the following code added. I will edit the fla for you so the link gets your private.php. I will edit the fla to suit "forums" and attatch the file asap.
PHP Code:
<!-- mail -->
<vb:if condition="$bbuserinfo[pmunread]">
<a style="display:scroll;position:fixed;bottom:-40px;right:-20px;" title="Click Here - new message!">
<object type="application/x-shockwave-flash"
data="http://www.shareme.org/forums/you-got-mail.swf"
width="150" height="250">
<param name="movie" value="http://www.shareme.org/forums/you-got-mail.swf" />
<param name="quality" value="high"/>
<param name="wmode" value="transparent"/>
</object>
</vb:if>
<!-- end of mail -->
The mod now has the attatched "you-got-mail.swf" to suit your board being "forums" so anyone who's board has "forums" rather than "forum" choose the relevant zip.
Hope this fixes the problem Steve