That could be because dot files are hidden files. But if you can figure out how to show hidden files on Windows, I'd think you would be able to in whatever file manager you use. (In Nautilus, you can use the "View" menu or the "View" tab in preferences.)
Isn't Alacarte a menu editor for GNOME? How did you install Tremulous with it...?
Why did I bother making sure I used the "proper" case for names?