http://www.microchip.com/stellent/idcplg?IdcService=3DSS_GET_PAGE&nodeId=3D= 1406&dDocName=3Den027813 If you have the older PICkit 2 units, make sure you read the following Microchip forum posts from the current developer. http://forum.microchip.com/tm.aspx?m=3D245280 With MPLAB 7.61, PICkit 2 now supports debugging of many popular PIC16F and PIC18F MCUs. 1. Midrange =96 Programming & Debugging inside MPLAB 7.61 PIC12F683* PIC16F684*, 685*, 687* PIC16F688*, 689*, 690* (* denotes that it needs a special ICD header just like MPLAB ICD2) PIC16F737, 747, 767, 777 PIC16F87, 88 PIC16F818, 819 PIC16F873A, 874A, 876A, 877A PIC16F883, 884, 886, 887 PIC16F913, 914, 916, 917 PIC16F946 2. PIC18F =96 Programming & Debugging inside MPLAB 7.61 PIC18F2410, 2420, 2423, 2480 PIC18F2510, 2520, 2523, 2580 PIC18F4410, 4420, 4423, 4480 PIC18F4510, 4520, 4523, 4580 PIC18F6310, 6390, 6410, 6490 PIC18F8310, 8390, 8410, 8490 PIC18F45K20, 25K20 So now PICkit 2 is more and more like poor man's MPLAB ICD2. Xiaofan -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist