This is a celebratory email! I have just managed to get an LED blinking once a second. This is driven by a 1ms timer which toggles the state of the LED evey 500ms. It may not sound like much, but it feels good to get here! Thanks again to Brent, and all the others that have helped me out. regards James Fitzsimons -- http://www.piclist.com hint: The PICList is archived three different ways. See http://www.piclist.com/#archives for details.