Convert 123 to PDF

Pretty much any document can be exported to PDF format and same applies to old .123 spreadsheets from Lotus 1-2-3. The real problem actually is to find some software, in this case spreadsheet editor, that still supports .123 files. Your best bet are most likely OpenOffice.org or similar suites, albeit you might have to look for some older version. Once opened, it's just a matter of using virtual PDF printer to achieve 123 to pdf conversion.