how can a user attach a zip file?

Question

Is there any way, any plugin, by installing which a q2a user can attach a file to his/her post?

Answer 1

I suggest you not to use attach feature.

Instead of it you can use file hosting sites like box.com, They also provide embed code too.

Answer 2

to be on the save site:

1. setup your own fileupload script, I like jQuery File Upload Plugin

2. let the script return a div-window including the link to the file

3. let the user copy this link into their posts.

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Otherwise you can use free CKeditor scripts, such as: FileManager in CKEditor

or the commercial version: http://cksource.com/ckfinder