A family of Microsoft relational database management systems designed for ease of use.
Do you have the “Export data with formatting and layout” option checked? If so, I would recommend unchecking this and then see if you get the dialog you would normally expect to see.
Export data to a text file - http://office.microsoft.com/en-us/access-help/export-data-to-a-text-file-HA010006905.aspx
Best Regards,
Nathan O.
Microsoft Online Community Support