All that topic said to do was:
1- create the Flash animation and get the necessary codes that you'd normally use to put the animation into a web page
2- put the Flash embedding codes into a file and call it (for example) inc_flashlogo.asp
3- open inc_header.asp and go to line 285, which should look like this:
" <td valign=""top"" width=""50%""><a href=""default.asp"" tabindex=""-1"">" & getCurrentIcon(strTitleImage & "||",strForumTitle,"") & "</a></td>" & vbNewLine & _
Change it to this:
" <td valign=""top"" width=""50%"">" & vbNewLine
%><!--#include file="inc_flashlogo.asp"--><%
Response.Write " </td>" & vbNewLine & _
4- Save the changes
5- upload inc_header.asp, inc_flashlogo.asp and the Flash animation to the correct locations and test it.
If you've done everything correctly it should work.