Issues with opening an xml page

[Troyster]

I am trying to open an xml sheet (called test.xsl). When I open in MS excel
2003 I get three options:

As an XML List
As a read-only workbook
Use the XML Source task pane

If I choose the first option I get message saying:

The specified XML Source does not refer to a schema. Excel will create a
schema based on the XML data source.

I click OK but nothing shows up. Any idea if I am doing something wrong
here? Is there an add on or something else needed in Excel?

Thank you in advance for any ideas you may have.

Troyster