Gracias chicos, ya lo he encontrado aunque ma a costado un poco... esto es lo que me pone...
##############################################################
## MOD Title: Auto Cookie
## MOD Author: geocator <
geocator@gmail.com > (Brian)
http://www.geocator.us
## MOD Description: Automaticly detects and writes proper domain name and cookie settings.
## MOD Version: 1.0.6
##
## Installation Level: Easy
## Installation Time: 1 minutes
## Files To Edit:
## Included Files: (cookie.php)
## Generator: MOD Studio 3.0 Alpha 1 [mod functions 0.2.1677.25348]
## License:
http://opensource.org/licenses/gpl-license.php GNU Public License v2
##############################################################
## For security purposes, please check:
http://www.phpbb.com/mods/
## for the latest version of this MOD. Although MODs are checked
## before being allowed in the MODs Database there is no guarantee
## that there are no security problems within the MOD. No support
## will be given for MODs not found within the MODs Database which
## can be found at
http://www.phpbb.com/mods/
##############################################################
## Author Notes: Copy cookie.php to the install directory and then run in browser.
## After running make sure to delete cookie.php and the install directory for security reasons.
##
##############################################################
## MOD History:
##
## 2005-07-09 - Version 1.0.6
##
## - Removed use of templates, since they dont work right in install directory.
##
## 2005-07-09 - Version 1.0.5
##
## - Added cookie secure option for all those that acidentaly set it.
##
## 2004-09-11 - Version 1.0.4
##
## - Small change in path detection due to directory change.
##
## 2004-09-11 - Version 1.0.3
##
## - Changed install location, added more lang vars to the top of file.
##
## 2004-09-22 - Version 1.0.2
##
## - PHP 3 compatibility fix
##
## 2004-09-11 - Version 1.0.1
##
## - Added lang variables where possible, fixed possible injection issues.
##
## 2004-08-19 - Version 1.0.0
##
## - Initial Release
##
##############################################################
## Before Adding This MOD To Your Forum, You Should Back Up All Files Related To This MOD
##############################################################
#
#-----[ COPY ]------------------------------------------
#
copy cookie.php to install/cookie.php
#
#-----[ SAVE/CLOSE ALL FILES ]------------------------------------------
#
# EoM
Segun esto solo tengo que copiar el archivo cookie.php a install/cookie.php?? es que soy novatillo y nunca he instalado ningun MOD