i dont' understand how you have grub on hdc... but whatever.
here is my grub.. maybe it will help (it seems your root=/dev/.. is missing.
default 0
timeout 15
color cyan/blue white/blue
foreground ffffff
background 0639a1
#gfxmenu /boot/grub/boot.xpm.gz
title MAIN Debian Sarge - ver. ALL on hda7

root (hd0,6)
kernel /boot/vmlinuz-2.6.12-1-386 root=/dev/hda7 ro noapic nomce noapci
initrd /boot/initrd.img-2.6.12-1-386
title Windows at hda1
rootnoverify (hd0,0)
chainloader +1
[end of my: /boot/grub/menu.lst ]
good luck, lettuce know.