apt-get wants to uninstatll grub

[Tom Brown <brown@esteem.com>]

Hi,

I did an 'apt-get update/upgrade' from sarge to etch. Everything went
fine. Then I wanted to upgrade my kernel. This command:

apt-get install linux-image-2.6.18-4-686

caused apt-get to want to uninstall grub and then install lilo. Why is
that happening? I'd like to keep grub. So, how do I prevent lilo from
being installed and upgrade my kernel?

Thanks,
Tom