Wrong date auto transformed by RecordSet object

any answer or suggestion highly appreciated.

when i input a date to recordset object, recordset object transform it 
unexpected.
here is example.

if i set RS(myDate) = '03/01/29', then RS(myDate) = 03/01/2029 in DB
if i set RS(myDate) = '03/01/30', then RS(myDate) = 03/01/1930 in DB

if any 2 digit stands for years between 30-99, it becomes 19xx, if between

00-29, it becomes 20xx. plz help!!! tks