sql fra flere tabeller

'[Microsoft][ODBC Microsoft Access Driver] Syntax error (missing operator) in query expression 'FORUM_USERGROUPS.usergroup_id = FORUM_USERGROUP_USERS.usergroup_id INNER JOIN FORUM_MEMBERS ON FORUM_MEMBERS.member_ID = FORUM_USERGROUPS.member_id'.
SQL = "SELECT FORUM_MEMBERS.*, FORUM_USERGROUPS.usergroup_name, FORUM_USERGROUPS.usergroup_id FROM FORUM_USERGROUPS INNER JOIN FORUM_USERGROUP_USERS ON FORUM_USERGROUPS.usergroup_id = FORUM_USERGROUP_USERS.usergroup_id INNER JOIN FORUM_MEMBERS ON FORUM_MEMBERS.member_ID = FORUM_USERGROUPS.member_id WHERE FORUM_MEMBERS.M_NAME='" & Session("Username") & "'"