Hello dmacq,

Did you make sure your programming software knows where to look for the programmer and what type of programmer you are using. You haven't mentioned anything about the software you are using so we can only grasp at straws. As Mr E said, MELabs has a patch for using their parrallel programmer with windows XP and you shouldn't have to remove your printer driver. I have 2 different HP printers on my system and both my USB and parrallel programmers work fine. If you are using Micro Code Studio you have to select which programmer you are using.

HTH,

BobK