[Tannerman]

Originally Posted by lightwave

my forum and site are located in different subdomains.

for example

site.domain.com
forum.domain.com

how do i still make the file work?

I had the same scenario (site vs. forum). I believe the solution lies in how you setup the call on every page from your non-forum subdomain. For example, to include the content on the non-forum site pages, I put something like this at the top:

<?php
chdir('/home/domainname/public_html/forums');
require_once('/home/domainname/public_html/forums/vBExternal.php');
?>

I think if you can figure out the proper reference here for your case, that should solve your issue.