by JussiH » Mon Mar 10, 2014 12:05 am
You are saying that you loaded ArduinoISP, right?
ArduinoISP is solely for "In System Programming" of AVR (Atmel) chips, and thus it wont work as a USB to Serial converter.
AFAIK, there no way to use a 328-based arduino as a serial adapter. The small duinos only have 1 hardware serial and its already in use when you connect to the Arduino IDE. You may be able to use an Arduino mega since it has 4 serials.