External table is not in the expected format. OWC11

[Guest]

Hi,

I am facing a peculiar problem. My Client Requirement is to Export and
Import Excel from and To DataSet for web Application using OWC.
Now Problem is When i Export file using OWC .. File's Extension is .xls but
it's XML Spreadsheet .. so when i am trying to import Extended Property=EXCEL
8.0 is not supported. and it gives error

"External table is not in the expected format."

because Excel 8.0 Accept CSV / Excel Workbook format.

And Client Export File using OWC11 only..

So Please suggest if there is anyway to import that file

Thanks in Advance.