Does the format of the hex file give anything about the location to program? In other words, I know there is some header info on the hex file such as....its this chip and whatever else but I want to program a single empty location AFTER the parts been programmed, using the PICKIT2. This is basically to identify the board being delivered to a specific customer, so part of the serial stream that comes out identifies the board by customer. Make sense? This location will be programmed as its being packaged for shipping, so they dont want to be programming them and then going thru testing again with them. --------------------------------- Need a vacation? Get great deals to amazing places on Yahoo! Travel. -- http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist