Da sie to zrobic bez problemu: wykonaj kroki:
[phpbb]
#SQL
//zamien wszedzie NP na swoj nowy prefiks
ALTER TABLE `phpbb_auth_access` RENAME `NP_auth_access` ;
ALTER TABLE `phpbb_banlist` RENAME `NP_banlists` ;
ALTER TABLE `phpbb_categories` RENAME `NP_categories` ;
ALTER TABLE `phpbb_color_groups` RENAME `NP_color_groups` ;
ALTER TABLE `phpbb_config` RENAME `NP_config` ;
ALTER TABLE `phpbb_confirm` RENAME `NP_confirm` ;
ALTER TABLE `phpbb_disallow` RENAME `NP_disallow` ;
ALTER TABLE `phpbb_forum_prune` RENAME `NP_forum_prune` ;
ALTER TABLE `phpbb_forums` RENAME `NP_forums` ;
ALTER TABLE `phpbb_groups` RENAME `NP_groups` ;
ALTER TABLE `phpbb_posts` RENAME `NP_posts` ;
ALTER TABLE `phpbb_posts_text` RENAME `NP_posts_text` ;
ALTER TABLE `phpbb_privmsgs` RENAME `NP_privmsgs` ;
ALTER TABLE `phpbb_privmsgs_text` RENAME `NP_privmsgs_text` ;
ALTER TABLE `phpbb_ranks` RENAME `NP_ranks` ;
ALTER TABLE `phpbb_search_results` RENAME `NP_search_results` ;
ALTER TABLE `phpbb_search_wordlist` RENAME `NP_search_wordlist` ;
ALTER TABLE `phpbb_search_wordmatch` RENAME `NP_search_wordmatch` ;
ALTER TABLE `phpbb_sessions` RENAME `NP_sessions` ;
ALTER TABLE `phpbb_smilies` RENAME `NP_smilies` ;
ALTER TABLE `phpbb_themes` RENAME `NP_themes` ;
ALTER TABLE `phpbb_themes_name` RENAME `NP_themes_name` ;
ALTER TABLE `phpbb_topics` RENAME `NP_topics` ;
ALTER TABLE `phpbb_topics_watch` RENAME `NP_topics_watch` ;
ALTER TABLE `phpbb_user_group` RENAME `NP_user_group` ;
ALTER TABLE `phpbb_users` RENAME `NP_users` ;
ALTER TABLE `phpbb_vote_desc` RENAME `NP_vote_desc` ;
ALTER TABLE `phpbb_vote_results` RENAME `NP_vote_results` ;
ALTER TABLE `phpbb_vote_voters` RENAME `NP_vote_voters` ;
ALTER TABLE `phpbb_words` RENAME `NP_words` ;
#OPEN config.php
//ten plik powinien byc na serwerze jesli go nie masz off-line
#FIND
$table_prefix = 'phpbb_';
#REPLACE
//zamien NP na swoj nowy prefiks
$table_prefix = 'NP_';
#SAVE & UPLOAD FILES
[/phpbb]
Powinno pomoc, ale nie testowalem takiej zmiany
Troo