help with dialup_admin

hi all i am from honduras and i am try of use the dialup_admin to freeradius. and i was run with phpMyadmin the tables to the BD dialup_admin, but some pages this show me this messages: Database query failed: Table 'radius.radacct' doesn't exist Database query failed: Table 'radius.usergroup' doesn't exist Database query failed: Table 'radius.radgroupcheck' doesn't exist how or when can find the structure of the tables for this db? thanks and so sorry for my bad english. -- Saludos! roghax85