To install PolyGlot (for Excel 5,7, 97 or later):

the package is compressed:
N.B. You temporarily need 1.5 MB on you hard disk for the uncompression of the archive. .

a) You have a version of WinZip with a very useful function for the installation of softwares. So launch INSTALL.EXE or click on the button Install, and it's magic : the archive is uncompressed, INSTALL.EXE is executed, INSTALL.XLA is executed after (if Excel is in the PATH or ever open), and in the end, you can uninstalled. But it can occur that it doesn't work see then the next point.
b) You don't have WinZip (so, you have a MAC !), the version of WinZip is old or INSTALL.EXE doesn't launch INSTALL.XLA. Uncompress the archive in a TEMPORY DIRECTORY with your preferred tool (PKunzip). Launch INSTALL.XLA with a double click from your file manager - WINFILE, EXPLORER, FINDER (for the MAC)... or open it from Excel.

To install PolyGlot ...some DIFFICULTIES with Excel 97 ou later, bug of compatibility...
!!! DON'T USE THE "INSTALL.EXE" OR "INSTALL.XLA" FILES !!!
- create a "PGLOT1US" directory
- copy in it all the files of the "PGLOT1US.ZIP" archive
- and launch the "PGLOT1US.XLA" file with Excel.