AVR-Chat

I am attempting to make use of Dave van Horn's 4 bit HD44780 LCD
control lib, but I am running into a problem

  The commands listed seem to suggest hat there is a register as well
as an "immediate" 8 bit value used to specify the command to the
display, but it is not clear which register, nor where/how the
"immediate" value is passed.

   Dave?

avrFreak