messagedude, it's not because fo this modification - I think when you hacked your UBB files to add it you accidently hacked and uploaded old files... also if you go to
http://www.djwebpages.com/cgi-bin/2ubb/ultimatebb.cgi?ubb=get_topic&f=1&t=000096 you see there are no compact headers, so it's not because of the hack..
brett, that's odd.. nobody else's got that problem.. anyhow, what I added in httpd.conf is:
LoadModule php4_module "f:/php/sapi/php4apache2.dll"
AddType application/x-httpd-php .php
try to add that to your conf instead of all the php things you've added so far..