borntokillyou:
http://hmario.home.xs4all.nl/arduino/LiquidCrystal_I2C/this is where i got my library:)
And you said:-
[I downloaded the i2c libray for the PCF8574 on the arduino site.](http://I downloaded the i2c libray for the PCF8574 on the arduino site.)
Look at the URL, that is NOT the arduino site.
LiquidCrystal_I2C lcd(0x38,16,2); // set the LCD address to 0x20 for a 16 chars and 2 line display
The code and the comment do not match 0x38 IS NOT 0x20