DBT.tar contain files necessary to run DBT and (please refer website for updated tutorial). You can see two perl files named dbtv2.pl and dbtv1_2.pl, former is new and automatic with additional features and later is older script which requires some manual more clicks (please see tutorial). The older version, dbt1_2.pl, has been kept as it allows modification, if necessary, as one builds dendrimer layer by layer manually.