I've searched, browsed and can't work out which 'version' to buy. What 'language' is needed? Any help in identifying the correct one that I need is appreciated. ie is OP COM OPCOM V1.45 With PIC18F458 OBD2 Opel Scanner Diagnostic tool V5 Version B suitable? there seem to be varied V1.xx numbers and also Version 7/B/N/GA etc in the descriptions.