import-b2 question

getting no love in the other thread;
http://wordpress.org/support/2/5817
so i thought i’d start a new one and ask, when you upgrade from b2 to wordpress, do you point wp-config.php to your old b2 database? the readme says to do a normal install first, but you can’t do that if you already have a db installed. it says do a normal install, following the directions in the readme, and then run import-b2.php, but that doesn’t work. i’m thinking maybe i should just upload all the wordpress files, point wp-config at my b2 db, and run import-b2, skipping the install script altogether. but i’d like to get someone to confirm it before i do. am i missing something? tia.