...
SELECT DISTINCT P.pj_pcode,P.pj_title,P.pj_state,P.pj_id ;
FROM DD_Proj P, DD_Tasklist T, DD_Tskdwgs D ;
WHERE P.pj_state='A' ;
AND P.pj_id = T.tl_projid ;
AND T.tl_id = D.td_tlid ;
AND D.td_code = ALLTRIM(STR(INT(VAL(Thisform.cboWc.Value)))) ;
ORDER BY P.pj_pcode ;
INTO CURSOR ProjListNew
...