Including a file with arduino

Hi
I just wanted to know where I am supposed to include library files or custom files for arduino. I tried hardware/avr/avr/include but not working

Chandra

If they are library files, they should go in the libraries subdirectory, just below where the IDE is stored. If they are not library files, but source and/or header files that you want included in the project, put them in the same directory where you store the sketch code. You can find out where your sketches are stored by looking at the File-Preferences menu sequence in the IDE.