>I have a microsoft Access2000 database with password
>and I have problem that if I open this database using ADO from VB6
>I recieve a worning massage says "ISAM File Not Installed"
>Notice that every thing is going ok when I open this database using DAO form vb5
>So, please if you know how can I solve this problem please tell me

See this: http://www.able-consulting.com/ADO_Conn.htm#OLEDBProviderForMicrosoftJet