HD44780 20x4 issue (showing all squares)

DEAFBOY:

altagest:
So, that is what i've done. sorry if it's a little bit confused, but this should clarify what i'm doing.
Let me know what you think!

Open -> Liquid Crystal -> HelloWorld

Meh, the only thing that changes from what i'm doing, is the 5V+ connected to the potentiometer. So nothing changes. Right?