It requires the full path to the flash file to work inside a portal. I did add the instructions how to do this earlier.
But here's what you'll need to do.
Find the following line in javascript call within the header template:
Code:
var fo = new FlashObject("vbflashheader.swf", "vbheader", "800", "150", "8,0,0,0", "#e1e1e2");
You'll see "vbflashheader.swf" - you will need to prepend this file with the full url to the flash file, for example:
"http://www.domain.com/forums/vbflashheader.swf"
This ensures the code looks in the correct directory for the flash file. The XML file should be automatically picking up the images if you haven't changed the xheader folder name.
Hope that helps!