No, sorry, doesn't happen here. What version of Windows do you have? What happens if you create the archive with the Finder's "Create archive" command? How large is the archive? When you say BetterZip hides the Mac files, do you switch the Show/Hide hidden files setting in BetterZip's view menu or do you check the option Remove Mac specific stuff from archives in the preferences window? If you only hid the files, try the second setting, because only that will really keep the Mac files out of the archive.