Running a xlr or xls file in redhat 9

[hollywood63 0]

How do I get xlr and xls files to open in redhat 9 I can run the xls off of a disc but not the xlr. Neither of them will open after I saved them to a folder. I get the following message. Nautilus has no installed veiwer capible of displaying filename.

Any thoughts would be appercaited

Art