Darrel: I don't think so but I'm really not sure. In the Control Panel under System it says Microsoft Windows XP Professional Version 2002 Service Pack 3. I don't see anything about 64 bit. Is there a way to be sure? BTW, I'm not using MicroCode Studio. Should I be? I didn't see that in the instructions. I'm just using the MPLAB IDE v8.50.

Thanks!