[wlug] Setting a linux computer to run only on the kernel that came with cd

I installed a win modem and have got it to work with ubuntu 8.04 however the driver only works with kernel 2.6.24-16-generic. How do I get it to boot up all the time with this kernel so that he doesn't need to make a choice from the grub boot menu where I have newer kernels installed. -- Ron Dean 2 Shannon Place Nawton Hamilton Ph 8493904