Thanks Melanie, Paul, Sayzer and Arch. I have been successful in writing and reading a 16F688. Just one question in response to the post by Sayzer. I used the data command, write command and read command. I see Sayzer used the EEPROM to store the variables and when looking at the PBP manual, I don't understand what the difference is. Just by using Data to program, read to view and write to store, everything worked great. What's the difference between Data and EEPROM and why would someone choose EEPROM over Data?