Questions relating to appending assets from one .blend file to another .blend file.
Accessed via: File > Append.
Blender's wiki page on appending files: http://wiki.blender.org/index.php/Doc:2.6/Manual/Data_System/Linked_Libraries
Blender is able to “reach in” to other .blend files and pull in whatever you want. In this way, Blender supports reuse of your graphical models. For example, if you have a library .blend file that has a really neat material used in it, you can, from your current .blend file, Append that material into your current .blend file. This saves you from manually re-creating all the different settings.