Please use vBulletin3.7 to SMF 2.0 RC2 converter, that is, the convert.php file with the vbulletin37_to_smf.sql file.
There should be no need to reinstall SMF (as you wish, though), just make sure you use the 3.7 file, when convert.php is asking what data file it should use.
That is, the attached file: vbulletin37_to_smf.sql