IoAccess DLL done

Another advance - the IoAccess DLL is done, allowing the program to dig out port details from the registry. Add the PortTalk DLL, and this is everything needed to finish off parallel port support (except for the time to put it together :-) The remaining work now is just filling in parallel port support and putting together the PIC16F877 programming algorithm, and then version 0.1 will be ready to go.