>I built ane stored procedure to assign the primary key to the employes's table.
>
>How can I invoke the stored procedure in the moment to insert the record ??

Put the procedre call in the primary key's default value property in the table designer.

>
>Can I invoke the stored procedure from a command button ??

Yes. As long as the Database is open and current, you can just call the function with

lcVal = Myfunction()