Sorry I should of been more clear 
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I am using a VHX1620 16x2 LCD Display, it has 14pins on the back, and is compatible with the Hitachi HD44780.
I have already had the LCD Display connected, and working following the details here: http://arduino.cc/en/Tutorial/LiquidCrystal
What I would like to know is how to display the 0-1023 (1024 ADC) input as a voltage reading on the LCD display.
Best Regards.