I think that it may be of interest to the forum to relate my experiences of trying to carry out the initial programming using my newest PC running on Win ME. The JDM failed to successfully measure the MCLR voltage correctly. This should be about 14V but measured -0.6V!. I eventually switched to a discarded PC using Win 98 and the program worked and the program verified. I also tried the same procedure with B and W Laptop and although MCLR was a little lower it also worked. I looks as if Win ME may suffer from the same problem as those with Win XP. I would be interested in any comments. Regards Robin