Where can I find the compass icons (the icons for different locations that are nearby)? And are they the same icons that are used in the map or are those different because they're different sizes or some other reason?

anyone?

I think they're inside the swf files in the interface.bsa

That is correct, you'll need to know how to work with Flash tools to get access to them. See the following thread:

http://www.gamesas.com/index.php?/topic/1275750-modding-the-gui/