Строка подключения
ADO= Новый COMОбъект( "ADODB.Connection" );
ADO.Open("
|Provider=VFPOLEDB.1;
|Deleted=Yes;
|Null = Yes;
|Exclusive = No;
|SourceType = DBF;
|Data Source=" + КаталогИБСтрокой + ";
|Mode=ReadWrite;
|Extended Properties="""";
|User ID="""";
|Password="""";
|Mask Password=False;
|Collating Sequence=MACHINE;
|DSN=""""");
Драйвер Fox надо ставить.
http://www.microsoft.com/downloads/details.aspx?FamilyId=E1A87D8F-2D58-491F-A0FA-95A3289C5FD4&displaylang=en 
