The LCD we're using is the serial enabled LCD SerLCD v2.5 it's default settings are 9600 bps with eight bits of data, 1 start bit, 1 stop bit, and no parity. I wasn't sure of the DEFINE LCD_LINES 2 command, but I figured it couldn't hurt since our LCD is 2 lines, and since the LCD is a serial input I didn't think I needed any of the LCDIN/LCDOUT commands.