[moved from private email] Richard, I met you at the 2007 microchip master conference, also I was in the class you taught. I am doing some experiments with RTOS and PIC24 dev kit, I would like to know how many files from the demo project are kernel files, which means those files do not need developer to modify them before using them. I will really appreciate your time in answering me this question.

Take a look on the following page: http://www.freertos.org/a00017.html  There is some detailed information on the directory structure used by FreeRTOS.org – including (near the very top) information on the files used by the actual kernel. Regards.