setting serial speed higher than 9600

[David Banning]

I am attempting to set the serial speed higher than 9600 to use it for a 
printer. The stty command does not appear to work;

root# stty -a -f /dev/cuaa0
speed 9600 baud; 0 rows; 0 columns;
...<snip>


root# stty -f /dev/cuaa0 57600

root# stty -a -f /dev/cuaa0
speed 9600 baud; 0 rows; 0 columns;
lflags: -icanon -isig -iexten ...<snip>

Any suggestions?