I've been sent an .xls file from a supplier, but when I open it in XL
2000 this is what I see:

<?xml version='1.0'?
<?mso-application progid='Excel.Sheet'?
<s:Workbook xmlns:x="urn:schemas-microsoft-com:office:excel"
xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:s="urn:schemas-
microsoft-com:office:spreadsheet"
<o:DocumentProperties
<o:AuthorBill Production System</o:Author
<o:Created2008-02-08T10:51:38</o:Created
<o:LastSaved2007-02-01T13:14:36</o:LastSaved

This is just the first few rows - it goes on for 23,000+, and all
these entries are in column A.

The supplier has had a new billing system installed.

Can I do anything with this file?

Pete