Problema con delete

[Superlinux]

Oye por fin lo logre .... Asi me quedo.

$sql2 = ("update contabilizacioncp set credito='0', debito='0'
where numdoc = $numdoc && codcuenta in ('11100506','11100507','11100508','11100509','1110 0510','11100511',
'11100512','11100513','11100514','11100515','11100 526')");
$respu2 = mysql_query($sql2);


$sql = ("delete from contabilizacioncp
where numdoc = $numdoc && codcuenta Not in ('11100506','11100507','11100508','11100509','1110 0510','11100511',
'11100512','11100513','11100514','11100515','11100 526')");
$respu1 = mysql_query($sql);
....