ok i have done that as below:

-------------Config---------------------*/
        // MySQL Database host - usually \'localhost\'
           $host=\'localhost\';

        // Your MySQL Database user
           $user=\'hostnet_fireb\';

        // Your MySQL Database password
           $pass=\'fireboard\';

        // Your MySQL Database name
           $db=\'hostnet_fireb\';

        // Joomla database prefix - Use existing Prefix
            $mosConfig_dbprefix = \'jos_fb_\';

        // phpBB2 database prefix - Use existing Prefix
            $phpbb_dbprefix = \'phpbb_\';

        // Temp DB prefix used for temporary tables in the script
        // set this to a prefix you are NOT using on your mySQL db
            $temp_dbprefix = \'temp_\';
        /* ---------------------------------------*/

although is still not working and am still receiving the same error :/

now its got through but now this problem:

Importing data from Fireboard
Connecting to Database... OK
Populating Categories...
Invalid query:
TRUNCATE TABLE phpbb_categories
Table \'hostnet_fireb.phpbb_categories\' doesn\'t exist

i got no idea what this mean :( Im not a code genius like some of you lot here.

your probably trying to convert an old version of fireboard?? i converted 1.0.5RC2 either way, i hope you made backups of your databases. that could also be the problem. if you started running the converter and messed up your database for joomla_FB in the first place, you should restore the backup you made and try running the converter code that actually ran on a good database.

its the latest version of fireboard. I exported the jom_fb_ tables from my joomla installations database and inserted them
into a fresh database. this is what im trying to use for the converter script.

anyone ?

sorry i thought that was a statement not a question, just export your entire database. name create a new database called conversion or whatever you want then instal the phpbb2 to a folder with its own database called phpbb (or whatever you want), then use the converter from the copy of the joomla database to the actual phpbb database, this way you are not actually touching your joomla database accept to copy it:) burt yes thats the general idea

@chris: If you like i can do it for you, contact me trough www (dot) cycomsplat (dot) com (payment).