Difference Primary Key On MS Access when use Native Driver and ODBC Driver

hi all,
   i make an application that use database ms access97.i identified primary
key in Ms Access and when i connect it by native bde driver, primary key is
changed...and when i connect it by odbc driver, primary key is correct same
i created it...
   can u help me? how can i solve it?

thank you

ruangwit kamerdsap