[ltp] boot sequence on my A21P

[Constant Brouerius van Nidek]

Still fun with this machine. It has still a windows partition but for the rest 
it is running openSUSE 11.0 and Drdos. 
Sometimes I want to run a life CD and in order to boot it I have to stop the 
machine and wait until the IBM logo shows up. After pressing F12 I can choose 
from a menu to boot from the Atapi drive. In the setup I found no way to 
arange the boot sequence.
I would like to include a command line in Grub when I want to run the CDrom.
According to the grub documentation it seems possible but I did not find out 
what the command line should be. Googling did not give results too.
How should this command look like?