In the hardware section I looked up the pro mini, which is listed there and it says:
SPI: 10 (SS), 11 (MOSI), 12 (MISO), 13 (SCK). These pins support SPI communication, which, although provided by the underlying hardware, is not currently included in the Arduino language.
Does this mean I can't use the SPI library with the PRO MINI? I'm wondering about using the DS3234 RTC from Sparkfun with the 5 volt Pro Mini. The DS3234 talks via SPI.