Forum Moderators: phranque
What percentage of users would know what to do with a zip file?
One stat to look at is how many of your users use Windows XP; It has an unzip program built into the shell that treats zip files much like folders. It's pretty intuitive, IMHO.
Also: Sorry if this seems like a stupid question, but you're not trying to serve the file from a defined "ScriptAlias" directory, are you? If you are, or for some reason your host has your entire webspace enabled to serve scripts, you won't be able to serve the .exe.