select menu item depending on frontkey

[Joachim Mammele]

Hi,
accrding to Vladimirs hints I adapted my grub-configuration.

What I changed in /boot/grub/grub.cfg is the following: (I'm aware that 
editing grub.cfg isn't the best option as it gets rewritten on executing 
the config-scripts)
(the whole file can be found here http://pastebin.com/K57RHjwn)

### BEGIN /etc/grub.d/00_header ###
if [ -s $prefix/grubenv ]; then
  load_env
fi

#unsigned char bits9, keybits;

set keybits = "32";
grub_outb(keybits, 0x20A);
grub_outw(-16832, 0x20C);
set bits9 = grub_inb(0x209);

echo "bits9= "
echo bits9

if (bits9 == 64)
    set default="1"
if (bits9 == 32)
    set default="2"
if (bits9 == 16)
    set default="3"
else
    set default="0"

On starting grub I see some error log-messages but before I can read 
them the grub-menu appears.
I'm using ubuntu 10.04 (Kernel 2.6.32-40)

Any help would be appreciated.

Greetings
Joachim