Install Older Kernel

[Yang Xiao <yxiao2004 gmail com>]

Hi all,
I haven't tried this, can I force install an older version kernel rpm?
I tried to install using rpm -ivh and it wouldn't let me saying a
newer version is installed already. I need to install the 2.6.7 kernel
so in case the 2.6.8 craps out, I can fall back to it. I know I can do
this if I uninstall 2.6.8, but it's a pain.
Many thanks,

Yang