Grub serial console question

[David Goodenough <david.goodenough@btconnect.com>]

Using Debian grub (unstable) where do I put the serial and terminal lines.

The /boot/grub directory as installed by the current installer does not
seem to have a /boot/grub/grub.conf file, nor a /etc/grub.conf.  The 
HOWTOs for serial console all suggest that this is the right place to put
the lines:-

serial --unit=0 --speed=9600
terminal --timeout=10 serial console

(or whatever speed you want).

I therefore created such a file (/boot/grub/grub.conf) but it had no
effect.

Given the way that grub has been built for Debian unstable where
should these lines be?

Thanks in advance

David