"Could not find installable ISAM"

Hi, when l use the ADO.NET with the following query,
SELECT * INTO XLImport5 FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0',
'Excel 8.0;Database=C:\test\xltest.xls', 'SELECT * FROM [Customers$]')

i get the following error, i.e.

Error: 0xC002F210 at Execute SQL Task, Execute SQL Task: Executing the query "SELECT * INTO XLImport5 FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0',
'Excel 8.0;Database=C:\test\xltest.xls', 'SELECT * FROM [Customers$]')" failed with the following error: "Cannot initialize the data source object of OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "(null)".
OLE DB provider "Microsoft.Jet.OLEDB.4.0" for linked server "(null)" returned message "Could not find installable ISAM.".". Possible failure reasons: Problems with the query, "ResultSet" property not set correctly, parameters not set correctly, or connection not established correctly.
Task failed: Execute SQL Task

Any idea, what's wrong?

Regards,
YB Lim

I read before... a fix for that could be to reinstall MDAC.

http://support.microsoft.com/default.aspx/kb/283881

http://support.microsoft.com/default.aspx/kb/209805

http://support.microsoft.com/default.aspx/kb/90111