>Sergey, I just checked.
>SQL Server PC is mapped properly. And still says then cannot open database.

SQL Server runs under specific account. It may or may not be account you're login to the server. Make sure that it's mapped under account SQL Server runs under.

>How can I check or install VFPOLEDB driver on SQL Server PC?

You can copy vfpoledb.dll into windows system directory on sever and register wirg regsvr32.