301 redirect in vbulletin v2.2.9

[getthat]

OK, I'll try to explain it again.

Now I've got some pages with url's like http://www.site.com/1/bla. I've got to add a new subdirectory and the links will change to http://www.site.com/1/2/bla. I cannot change the urls without notifying the search engines that these pages moved. So, I've got to send a 301 page redirect permanently header when someone goes to http://www.site.com/1/bla (he will be redirected to http://www.site.com/1/2/bla.

The code for the headers is located in the global.php file (search for header). There is only one header configured and that's the 200 "everything's ok". I've got to add a 301 header in this section of global.php and it has to work for specific urls. Someone knows how to do this ? I guess this would be a great hack for people who want to move some urls of their site to a new url and keep their good position in the search engines.

Getthat