Olin I have been looking at the include files that you have on your website, and am having a problem getting a handle on how your pre-processor handles them. What do you use for a pre-processor and how does it determine which of the files it should use? Once I get around this part of the process then I think I may be able to make better sense of what I have. -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.