At a Slackware mirror or at a Slackware cd there are different 2.4.33.3 kernels (the default one is bare.i, there is a bareacpi.i for acpi, there is a sata.i for SATA and more). There are always three files in such a directory (bzImage, System.map.gz and config). These files you copy to your /boot folder
Code:
cp bzImage /boot/vmlinuz
cp System.map.gz /boot/System.map
cp config /boot/config
Then you rerun
to install the changes to your bootloader.
You may make before copying the new kernel to /boot a backup of your running kernel or just another boot option in your /etc/lilo.conf with the new kernel.
If you have two or more "vmlinuz" in your /boot they must have different names, also the System.maps and configs.
Fluxx.