Francemi: you basically install it and modify the configure file, letting it know the name of your downloads folder, which should be a difficult name to prevent hotlinking; you might also want to change the alloted number of downloads available. You then use download.php?=nameoffile.zip. as the link to your file. The script checks that the user hasn't burnt his allowance of downloads, and that the IP isn't banned; if everything is OK, it streams the download to the visitor. If not, it shows a 403 page. If you combine this with some changes in your .htaccess file, you should have a reasonably tight security against multiple downloads.

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