Combo Box Doesn't show anything!!!!

The entry form has been linked with Access 97 database (for instance, customer table) which contains some customer information using ADO data control. It displays correctly, but the combo box doesn;t show anything ( cboGender contains Male and female). Do ya know the problems?

If you use Microsoft DataCombo Control set two properties
RowSource = Adodc1
ListField = FieldToSelect

Adodc1 - Control linked to table with information content Male and Female.