you don't have to go directly to prefs.js.
edit -> mail & newsgroup settings
look at the server setting for each account.
at the bottom of the screen is the path.
> OK, I think I've figured it out. It's necessary to edit the prefs.js
> file, and change all the paths. For example, I changed:
>
> user_pref("mail.server.server3.directory", "C:\\Documents and
> Settings\\chuck\\Application
> Data\\Mozilla\\Users50\\default\\5a54tawp.slt\\News\\news.mozilla-6.org");
>
> to
>
> user_pref("mail.server.server3.directory",
> "C:\\chuck\\mozilla\\rjuvog5p.slt\\News\\news.mozilla-6.org");
>
> Making a similar change throughout prefs.js solved my problem. (it
> seems...)
>
>
> - Chuck
>