Hi,
The PBP command to use with that display is SHIFTOUT.
Pull the Chip Select line low, set the RS line high or low depending on if it's a command or data you're sending, the use SHIFTOUT to send the actual command (or data) to the display.

Make sure to read up on the SHIFTOUT command in the manual, the instruction set for the LCD is in the datasheet. If you get stuck post the code and details on which chip etc you're using and I'm sure someone will be able to help.

It looks to be a 3.3V unit, make sure you doublecheck that before trying to connect it to 5V!

/Henrik.