Hi,
If I understand correctly, you have two different hard drives with two different operating systems (OS's) and you want a choice at start-up which one to choose.
The following is an example booting Fedora 11 and Windows 2000.
Please note that I have set the default to 10 seconds in order to select the OS I want.
Without making a choice Fedora, (default 0), would boot automatically after the 10 second countdown expires.
Windows would be default 1 in this example.
Also note that hiddenmenu has been commented out.
This then provides a splash screen with the 2 "title" choices.
In Kubuntu you would edit the /boot/grub/menu.lst file to accomplish this.
default=0
timeout=10
splashimage=(hd0,0)/grub/splash.xpm.gz
#hiddenmenu
title Fedora 11.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.30.8-64.fc11.x86_64 ro root=/dev/VolGroup00/LogVol00 rhgb quiet vga=0x318
initrd /initrd-2.6.30.8-64.fc11.x86_64.img
title Windows 2000 Pro
map (hd0,0) (hd1,0)
map (hd1,0) (hd0,0)
rootnoverify (hd1,0)
chainloader +1