>>>I might be wrong, but I thought there was a tool that allows importing XLS files without having Excel installed?
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>>Unzip the xlsx, and then in the xl subfolder there's sheet1.xml, sheet2.xml etc. Then read the xml and get the values.
>
>PMFJI, but how do you Unzip an xlsx file? I am using legacy pkzip25.exe but I can't figure what you mean.

Dmitry, if you rename the file's extension to zip, you can unzip directly from the Windows Explorer.